9 letter word starting with o

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Words Parts of Speech Meaning/Definition/Similar Words
ourselves plural of Myself, ; sing. Ourself (/). An emphasized form of the pronoun of the first person plural; — used as a subject, usually with we; also, alone in the predicate, in the nominative or the objective case.
obconical adjective Conical, but having the apex downward; inversely conical.
obcordate adjective Heart-shaped, with the attachment at the pointed end; inversely cordate: as, an obcordate petal or leaf.
obduction noun The act of drawing or laying over, as a covering.
obedience noun The act of obeying, or the state of being obedient; compliance with that which is required by authority; subjection to rightful restraint or control., Words or actions denoting submission to authority; dutifulness., A following; a body of adherents; as, the Roman Catholic obedience, or the whole body of persons who submit to the authority of the pope., A cell (or offshoot of a larger monastery) governed by a prior., One of the three monastic vows., The written precept of a superior in a religious order or congregation to a subject.
obeisance noun Obedience., A manifestation of obedience; an expression of difference or respect; homage; a bow; a courtesy.
obeisancy noun See Obeisance.
obeliscal adjective Formed like an obelisk.
obelisked imp. & past participle of Obelisk
obelizing present participle & vb. noun of Obelize
obeseness noun Quality of being obese; obesity.
obeyingly adverb Obediently; submissively.
obfirmate verb t. To make firm; to harden in resolution.
obfuscate adjective Obfuscated; darkened; obscured., To darken; to obscure; to becloud; hence, to confuse; to bewilder.
objecting present participle & vb. noun of Object
objectify verb t. To cause to become an object; to cause to assume the character of an object; to render objective.
objection noun The act of objecting; as, to prevent agreement, or action, by objection., That which is, or may be, presented in opposition; an adverse reason or argument; a reason for objecting; obstacle; impediment; as, I have no objection to going; unreasonable objections., Cause of trouble; sorrow.
objectist noun One who adheres to, or is skilled in, the objective philosophy.
objective adjective Of or pertaining to an object., Of or pertaining to an object; contained in, or having the nature or position of, an object; outward; external; extrinsic; — an epithet applied to whatever ir exterior to the mind, or which is simply an object of thought or feeling, and opposed to subjective., Pertaining to, or designating, the case which follows a transitive verb or a preposition, being that case in which the direct object of the verb is placed. See Accusative, n., The objective case., An object glass. See under Object, n., Same as Objective point, under Objective, a.
objibways nounpl. See Chippeways.
objicient noun One who makes objection; an objector.
objurgate verb t. To chide; to reprove.
oblatrate verb i. To bark or snarl, as a dog.
oblectate verb t. To delight; to please greatly.
obligable adjective Acknowledging, or complying with, obligation; trustworthy.
obligated imp. & past participle of Obligate
obliquing present participle & vb. noun of Oblique
obliquely adverb In an oblique manner; not directly; indirectly.
obliquity noun The condition of being oblique; deviation from a right line; deviation from parallelism or perpendicularity; the amount of such deviation; divergence; as, the obliquity of the ecliptic to the equator., Deviation from ordinary rules; irregularity; deviation from moral rectitude.
oblivious adjective Promoting oblivion; causing forgetfulness., Evincing oblivion; forgetful.
oblocutor noun A disputer; a gainsayer.
oblongata noun The medulla oblongata.
oblongish adjective Somewhat oblong.
obnoxious adjective Subject; liable; exposed; answerable; amenable; — with to., Liable to censure; exposed to punishment; reprehensible; blameworthy., Offensive; odious; hateful; as, an obnoxious statesman; a minister obnoxious to the Whigs.
obomegoid adjective Obversely omegoid.
obreption noun The act of creeping upon with secrecy or by surprise., The obtaining gifts of escheat by fraud or surprise.
obscenity noun That quality in words or things which presents what is offensive to chasity or purity of mind; obscene or impure lanquage or acts; moral impurity; lewdness; obsceneness; as, the obscenity of a speech, or a picture.
obscurant noun One who obscures; one who prevents enlightenment or hinders the progress of knowledge and wisdom.
obscuring present participle & vb. noun of Obscure
obscurely adverb In an obscure manner.
obscurity noun The quality or state of being obscure; darkness; privacy; inconspicuousness; unintelligibleness; uncertainty.
obsecrate verb t. To beseech; to supplicate; to implore.
obsequent adjective Obedient; submissive; obsequious.
obsequies nounpl. See Obsequy., of Obsequy
observant adjective Taking notice; viewing or noticing attentively; watchful; attentive; as, an observant spectator; observant habits., Submissively attentive; obediently watchful; regardful; mindful; obedient (to); — with of, as, to be observant of rules., One who observes forms and rules., A sycophantic servant., An Observantine.
observing present participle & vb. noun of Observe, Giving particular attention; habitually attentive to what passes; as, an observing person; an observing mind.
obsession noun The act of besieging., The state of being besieged; — used specifically of a person beset by a spirit from without.
obsignate verb t. To seal; to ratify.
obsolesce verb i. To become obsolescent.
obstetric adjective Alt. of Obstetrical
obstinacy noun A fixedness in will, opinion, or resolution that can not be shaken at all, or only with great difficulty; firm and usually unreasonable adherence to an opinion, purpose, or system; unyielding disposition; stubborness; pertinacity; persistency; contumacy., The quality or state of being difficult to remedy, relieve, or subdue; as, the obstinacy of a disease or evil.
obstinate adjective Pertinaciously adhering to an opinion, purpose, or course; persistent; not yielding to reason, arguments, or other means; stubborn; pertinacious; — usually implying unreasonableness., Not yielding; not easily subdued or removed; as, obstinate fever; obstinate obstructions.
obstringe verb t. To constrain; to put under obligation.
obstruent adjective Causing obstruction; blocking up; hindering; as, an obstruent medicine., Anything that obstructs or closes a passage; esp., that which obstructs natural passages in the body; as, a medicine which acts as an obstruent.
obstupefy verb t. See Stupefy.
obtaining present participle & vb. noun of Obtain
obtending present participle & vb. noun of Obtend
obtension noun The act of obtending.
obtesting present participle & vb. noun of Obtest
obtruding present participle & vb. noun of Obtrude
obtrusion noun The act of obtruding; a thrusting upon others by force or unsolicited; as, the obtrusion of crude opinions on the world., That which is obtruded.
obtrusive adjective Disposed to obtrude; inclined to intrude or thrust one’s self or one’s opinions upon others, or to enter uninvited; forward; pushing; intrusive.
obtunding present participle & vb. noun of Obtund
obtundent noun A substance which sheathes a part, or blunts irritation, usually some bland, oily, or mucilaginous matter; — nearly the same as demulcent.
obturator noun That which closes or stops an opening., An apparatus designed to close an unnatural opening, as a fissure of the palate., Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen; as, the obturator nerve.
obumbrant adjective Overhanging; as, obumbrant feathers.
obumbrate verb t. To shade; to darken; to cloud.
obvention noun The act of happening incidentally; that which happens casually; an incidental advantage; an occasional offering.
obversant adjective Conversant; familiar.
obversely adverb In an obverse manner.
obversion noun The act of turning toward or downward., The act of immediate inference, by which we deny the opposite of anything which has been affirmed; as, all men are mortal; then, by obversion, no men are immortal. This is also described as “immediate inference by privative conception.”
obverting present participle & vb. noun of Obvert
obviating present participle & vb. noun of Obviate
obviation noun The act of obviating, or the state of being obviated.
obvoluted adjective Overlapping; contorted; convolute; — applied primarily, in botany, to two opposite leaves, each of which has one edge overlapping the nearest edge of the other, and secondarily to a circle of several leaves or petals which thus overlap.
occiduous adjective Western; occidental.
occipital adjective Of or pertaining to the occiput, or back part of the head, or to the occipital bone., The occipital bone.
occipito- A combining form denoting relation to, or situation near, the occiput; as, occipito-axial; occipito-mastoid.
occludent adjective Serving to close; shutting up., That which closes or shuts up.
occlusion noun The act of occluding, or the state of being occluded., The transient approximation of the edges of a natural opening; imperforation.
occulting noun Same as Occultation.
occultism noun A certain Oriental system of theosophy.
occultist noun An adherent of occultism.
occupancy noun The act of taking or holding possession; possession; occupation.
occupying present participle & vb. noun of Occupy
occurring present participle & vb. noun of Occur
occurrent adjective Occurring or happening; hence, incidental; accidental., One who meets; hence, an adversary., Anything that happens; an occurrence.
occursion noun A meeting; a clash; a collision.
ocellated adjective Resembling an eye., Marked with eyelike spots of color; as, the ocellated blenny.
ochreated adjective Wearing or furnished with an ochrea or legging; wearing boots; booted., Provided with ochrea, or sheathformed stipules, as the rhubarb, yellow dock, and knotgrass.
octachord noun An instrument of eight strings; a system of eight tones.
octaedral adjective See Octahedral.
octagonal adjective Having eight sides and eight angles.
octameter noun A verse containing eight feet; as, –//Deep# in|to# the | dark#ness | peer#ing, | long# I | stood# there | wond’#ring, | fear#ing.
octandria nounpl. A Linnaean class of plants, in which the flowers have eight stamens not united to one another or to the pistil.
octastyle adjective See Octostyle.
octateuch noun A collection of eight books; especially, the first eight books of the Old Testament.
octennial adjective Happening every eighth year; also, lasting a period of eight years.
octillion noun According to the French method of numeration (which method is followed also in the United States) the number expressed by a unit with twenty-seven ciphers annexed. According to the English method, the number expressed by a unit with forty-eight ciphers annexed. See Numeration.
octochord noun See Octachord.
octogonal adjective See Octagonal.
octogynia nounpl. A Linnaean order of plants having eight pistils.
octopodia nounpl. Same as Octocerata.
octostyle adjective Having eight columns in the front; — said of a temple or portico. The Parthenon is octostyle, but most large Greek temples are hexastele. See Hexastyle., An octostyle portico or temple.
oculiform adjective In the form of an eye; resembling an eye; as, an oculiform pebble.
ocypodian noun One of a tribe of crabs which live in holes in the sand along the seashore, and run very rapidly, — whence the name.
odalisque noun A female slave or concubine in the harem of the Turkish sultan.
odontalgy noun Same as Odontalgia.
odorament noun A perfume; a strong scent.
odorating adjective Diffusing odor or scent; fragrant.
oenanthic adjective Having, or imparting, the odor characteristic of the bouquet of wine; specifically used, formerly, to designate an acid whose ethereal salts were supposed to occasion the peculiar bouquet, or aroma, of old wine. Cf. Oenanthylic.
oenanthol noun An oily substance obtained by the distillation of castor oil, recognized as the aldehyde of oenanthylic acid, and hence called also oenanthaldehyde.
oenanthyl noun A hydrocarbon radical formerly supposed to exist in oenanthic acid, now known to be identical with heptyl.
oenomania noun Delirium tremens., Dipsomania.
oenometer noun See Alcoholometer.
offending present participle & vb. noun of Offend
offendant noun An offender.
offension noun Assault; attack.
offensive adjective Giving offense; causing displeasure or resentment; displeasing; annoying; as, offensive words., Giving pain or unpleasant sensations; disagreeable; revolting; noxious; as, an offensive smell; offensive sounds., Making the first attack; assailant; aggressive; hence, used in attacking; — opposed to defensive; as, an offensive war; offensive weapons., The state or posture of one who offends or makes attack; aggressive attitude; the act of the attacking party; — opposed to defensive.
offerable adjective Capable of being offered; suitable or worthy to be offered.
offertory noun The act of offering, or the thing offered., An anthem chanted, or a voluntary played on the organ, during the offering and first part of the Mass., That part of the Mass which the priest reads before uncovering the chalice to offer up the elements for consecration., The oblation of the elements., The Scripture sentences said or sung during the collection of the offerings., The offerings themselves.
offerture noun Offer; proposal; overture.
officered imp. & past participle of Officer
officiant noun The officer who officiates or performs an office, as the burial office.
officiary adjective Of or pertaining to an office or an officer; official.
officiate verb i. To act as an officer in performing a duty; to transact the business of an office or public trust; to conduct a public service., To discharge, perform, or supply, as an official duty or function.
officinal adjective Used in a shop, or belonging to it., Kept in stock by apothecaries; — said of such drugs and medicines as may be obtained without special preparation or compounding; not magistral.
officious adjective Pertaining to, or being in accordance with, duty., Disposed to serve; kind; obliging., Importunately interposing services; intermeddling in affairs in which one has no concern; meddlesome.
offspring nounsing. & pl. The act of production; generation., That which is produced; a child or children; a descendant or descendants, however remote from the stock., Origin; lineage; family.
offuscate Alt. of Offuscation
oftenness noun Frequency.
oftensith adverb Frequently; often.
oftentide adverb Frequently; often.
oinomania noun See oenomania.
oleaceous adjective Of, pertaining to, or resembling, a natural order of plants (Oleaceae), mostly trees and shrubs, of which the olive is the type. It includes also the ash, the lilac, the true jasmine, and fringe tree.
olecranal adjective Of or pertaining to the olecranon.
olecranon noun The large process at the proximal end of the ulna which projects behind the articulation with the humerus and forms the bony prominence of the elbow.
oleograph noun The form or figure assumed by a drop of oil when placed upon water or some other liquid with which it does not mix., A picture produced in oils by a process analogous to that of lithographic printing.
oleometer noun An instrument for ascertaining the weight and purity of oil; an elaiometer.
oleoptene noun See Eleoptene.
oleoresin noun A natural mixture of a terebinthinate oil and a resin., A liquid or semiliquid preparation extracted (as from capsicum, cubebs, or ginger) by means of ether, and consisting of fixed or volatile oil holding resin in solution.
olfaction noun The sense by which the impressions made on the olfactory organs by the odorous particles in the atmosphere are perceived.
olfactive adjective See Olfactory, a.
olfactory adjective Of, pertaining to, or connected with, the sense of smell; as, the olfactory nerves; the olfactory cells., An olfactory organ; also, the sense of smell; — usually in the plural.
oligarchy noun A form of government in which the supreme power is placed in the hands of a few persons; also, those who form the ruling few.
oligistic adjective Of or pertaining to hematite.
oligocene adjective Of, pertaining to, or designating, certain strata which occupy an intermediate position between the Eocene and Miocene periods., The Oligocene period. See the Chart of Geology.
olivaster adjective Of the color of the olive; tawny.
olivenite noun An olive-green mineral, a hydrous arseniate of copper; olive ore.
oliverian noun An adherent of Oliver Cromwell.
olivewood noun The wood of the olive., An Australian name given to the hard white wood of certain trees of the genus Elaeodendron, and also to the trees themselves.
olusatrum noun An umbelliferous plant, the common Alexanders of Western Europe (Smyrnium Olusatrum).
omination noun The act of ominating; presaging.
omissible adjective Capable of being omitted; that may be omitted.
omittance noun The act of omitting, or the state of being omitted; forbearance; neglect.
ommatidia plural of Ommatidium
omnigraph noun A pantograph.
omophagic adjective Eating raw flesh; using uncooked meat as food; as, omophagic feasts, rites.
omphacine adjective Of, pertaining to, or expressed from, unripe fruit; as, omphacine oil.
omphalode noun The central part of the hilum of a seed, through which the nutrient vessels pass into the rhaphe or the chalaza; — called also omphalodium.
oncograph noun An instrument for registering the changes observable with an oncometer.
oncometer noun An instrument for measuring the variations in size of the internal organs of the body, as the kidney, spleen, etc.
one-horse adjective Drawn by one horse; having but a single horse; as, a one-horse carriage., Second-rate; inferior; small.
oneliness noun The state of being one or single.
onerating present participle & vb. noun of Onerate
oneration noun The act of loading.
onerously adverb In an onerous manner.
one-sided adjective Having one side only, or one side prominent; hence, limited to one side; partial; unjust; unfair; as, a one-sided view or statement., Growing on one side of a stem; as, one-sided flowers.
on-hanger noun A hanger-on.
on-looker noun A looker-on.
onomantic adjective Alt. of Onomantical
onomastic adjective Applied to a signature when the body of the instrument is in another’s handwriting.
onomatope noun An imitative word; an onomatopoetic word.
onomatopy noun Onomatopoeia.
onondagas noun pl. A tribe of Indians formerly inhabiting what is now a part of the State of New York. They were the central or head tribe of the Five Nations.
onslaught noun An attack; an onset; esp., a furious or murderous attack or assault., A bloody fray or battle.
ontogenic adjective Ontogenetic.
ontologic adjective Ontological.
oogenesis noun The development, or mode of origin, of the ova.
oogoniums plural of Oogonium
oological adjective Of or pertaining to oology.
oophorida plural of Oophoridium
oostegite noun One of the plates which in some Crustacea inclose a cavity wherein the eggs are hatched.
opalesced imp. & past participle of Opalesce
opalizing present participle & vb. noun of Opalize
opalotype noun A picture taken on “milky” glass.
open-eyed adjective With eyes widely open; watchful; vigilant.
operating present participle & vb. noun of Operate
operation noun The act or process of operating; agency; the exertion of power, physical, mechanical, or moral., The method of working; mode of action., That which is operated or accomplished; an effect brought about in accordance with a definite plan; as, military or naval operations., Effect produced; influence., Something to be done; some transformation to be made upon quantities, the transformation being indicated either by rules or symbols., Any methodical action of the hand, or of the hand with instruments, on the human body, to produce a curative or remedial effect, as in amputation, etc.
operative adjective Having the power of acting; hence, exerting force, physical or moral; active in the production of effects; as, an operative motive., Producing the appropriate or designed effect; efficacious; as, an operative dose, rule, or penalty., Based upon, or consisting of, an operation or operations; as, operative surgery., A skilled worker; an artisan; esp., one who operates a machine in a mill or manufactory.
operatory noun A laboratory.
oparcular adjective Of, pertaining to, or like, an operculum.
opercular noun The principal opercular bone or operculum of fishes.
operculum noun The lid of a pitcherform leaf., The lid of the urnlike capsule of mosses., Any lidlike or operculiform process or part; as, the opercula of a dental follicle., The fold of integument, usually supported by bony plates, which protects the gills of most fishes and some amphibians; the gill cover; the gill lid., The principal opercular bone in the upper and posterior part of the gill cover., The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda., Any lid-shaped structure closing the aperture of a tube or shell.
operosity noun Laboriousness.
ophidioid adjective Of or pertaining to the Ophidiidae, a family of fishes which includes many slender species., One of the Ophidiidae.
ophidious adjective Ophidian.
ophiology noun That part of natural history which treats of the ophidians, or serpents.
ophiuchus noun A constellation in the Northern Hemisphere, delineated as a man holding a serpent in his hands; — called also Serpentarius.
ophiurida noun pl. Same as Ophiurioidea.
ophthalmy noun Same as Ophthalmia.
opiferous adjective Bringing help.
opination noun The act of thinking; a supposition.
opinative adjective Obstinate in holding opinions; opinionated.
opiniatre adjective Opinionated., One who is opinionated., See Opiniaster.
opiniated adjective Opinionated.
opiniator noun Alt. of Opiniatre
opinioned adjective Opinionated; conceited.
opiparous adjective Sumptuous.
opisthion noun The middle of the posterior, or dorsal, margin of the great foramen of the skull.
opisthomi noun pl. An order of eellike fishes having the scapular arch attached to the vertebrae, but not connected with the skull.
ople tree The witch-hazel.
opobalsam noun Alt. of Opobalsamum
opodeldoc noun A kind of plaster, said to have been invented by Mindererus, — used for external injuries., A saponaceous, camphorated liniment; a solution of soap in alcohol, with the addition of camphor and essential oils; soap liniment.
oppilated imp. & past participle of Oppilate
oppletion noun The act of filling up, or the state of being filled up; fullness.
opponency noun The act of opening an academical disputation; the proposition of objections to a tenet, as an exercise for a degree.
opportune adjective Convenient; ready; hence, seasonable; timely., To suit.
opposable adjective Capable of being opposed or resisted., Capable of being placed opposite something else; as, the thumb is opposable to the forefinger.
oppressed imp. & past participle of Oppress
oppressor noun One who oppresses; one who imposes unjust burdens on others; one who harasses others with unjust laws or unreasonable severity.
oppugning p pr. & vb. noun of Oppugn
oppugnant adjective Tending to awaken hostility; hostile; opposing; warring., An opponent.
opsimathy noun Education late in life.
optically adverb By optics or sight; with reference to optics.
optigraph adjective A telescope with a diagonal eyepiece, suspended vertically in gimbals by the object end beneath a fixed diagonal plane mirror. It is used for delineating landscapes, by means of a pencil at the eye end which leaves the delineation on paper.
optimates noun pl. The nobility or aristocracy of ancient Rome, as opposed to the populares.
optocoele noun Alt. of Optocoelia
optometer noun An instrument for measuring the distance of distinct vision, mainly for the selection of eveglasses.
opusculum noun An opuscule.
oraculous adjective Oracular; of the nature of an oracle.
orangeade noun A drink made of orange juice and water, corresponding to lemonade; orange sherbet.
orangeism noun Attachment to the principles of the society of Orangemen; the tenets or practices of the Orangemen.
orangeman noun One of a secret society, organized in the north of Ireland in 1795, the professed objects of which are the defense of the regning sovereign of Great Britain, the support of the Protestant religion, the maintenance of the laws of the kingdom, etc.; — so called in honor of William, Prince of Orange, who became William III. of England.
oratorial adjective Oratorical.
oratorian adjective Oratorical., See Fathers of the Oratory, under Oratory.
oratorize verb i. To play the orator.
oratories plural of Oratory
orbicular adjective Resembling or having the form of an orb; spherical; circular; orbiculate.
orbitelae noun pl. A division of spiders, including those that make geometrical webs, as the garden spider, or Epeira.
orbituary adjective Orbital.
orchester noun See Orchestra.
orchestra noun The space in a theater between the stage and the audience; — originally appropriated by the Greeks to the chorus and its evolutions, afterward by the Romans to persons of distinction, and by the moderns to a band of instrumental musicians., The place in any public hall appropriated to a band of instrumental musicians., Loosely: A band of instrumental musicians performing in a theater, concert hall, or other place of public amusement., Strictly: A band suitable for the performance of symphonies, overtures, etc., as well as for the accompaniment of operas, oratorios, cantatas, masses, and the like, or of vocal and instrumental solos., A band composed, for the largest part, of players of the various viol instruments, many of each kind, together with a proper complement of wind instruments of wood and brass; — as distinguished from a military or street band of players on wind instruments, and from an assemblage of solo players for the rendering of concerted pieces, such as septets, octets, and the like., The instruments employed by a full band, collectively; as, an orchestra of forty stringed instruments, with proper complement of wind instruments.
orchestre noun See Orchestra.
orchidean adjective Orchidaceous.
orchotomy noun The operation of cutting out or removing a testicle by the knife; castration.
ordaining present participle & vb. noun of Ordain
orderable adjective Capable of being ordered; tractable.
orderless adjective Being without order or regularity; disorderly; out of rule.
orderlies plural of Orderly
ordinable adjective Capable of being ordained or appointed.
ordinance noun Orderly arrangement; preparation; provision., A rule established by authority; a permanent rule of action; a statute, law, regulation, rescript, or accepted usage; an edict or decree; esp., a local law enacted by a municipal government; as, a municipal ordinance., An established rite or ceremony., Rank; order; station., Ordnance; cannon.
ordinator noun One who ordains or establishes; a director.
ordonnant adjective Of or pertaining to ordonnance.
oreoselin noun A white crystalline substance which is obtained indirectly from the root of an umbelliferous plant (Imperatoria Oreoselinum), and yields resorcin on decomposition.
organical adjective Organic.
organific adjective Making an organic or organized structure; producing an organism; acting through, or resulting from, organs.
organista noun Any one of several South American wrens, noted for the sweetness of their song.
organized imp. & past participle of Organize
organizer noun One who organizes.
organling noun A large kind of sea fish; the orgeis.
organogen noun A name given to any one of the four elements, carbon, hydrogen, oxygen, and nitrogen, which are especially characteristic ingredients of organic compounds; also, by extension, to other elements sometimes found in the same connection; as sulphur, phosphorus, etc.
organzine noun A kind of double thrown silk of very fine texture, that is, silk twisted like a rope with different strands, so as to increase its strength.
orgiastic adjective Pertaining to, or of the nature of, orgies.
orgillous adjective Proud; haughty.
oricalche noun See Orichalch.
orichalch noun A metallic substance, resembling gold in color, but inferior in value; a mixed metal of the ancients, resembling brass; — called also aurichalcum, orichalcum, etc.
orientate verb t. To place or turn toward the east; to cause to assume an easterly direction, or to veer eastward., To arrange in order; to dispose or place (a body) so as to show its relation to other bodies, or the relation of its parts among themselves., To move or turn toward the east; to veer from the north or south toward the east.
oriflamme noun The ancient royal standard of France., A standard or ensign, in battle.
origenism noun The opinions of Origen of Alexandria, who lived in the 3d century, one of the most learned of the Greek Fathers. Prominent in his teaching was the doctrine that all created beings, including Satan, will ultimately be saved.
origenist noun A follower of Origen of Alexandria.
originant adjective Originating; original.
originary adjective Causing existence; productive., Primitive; primary; original.
originate verb t. To give an origin or beginning to; to cause to be; to bring into existence; to produce as new., To take first existence; to have origin or beginning; to begin to exist or act; as, the scheme originated with the governor and council.
orography noun That branch of science which treats of mountains and mountain systems; orology; as, the orography of Western Europe.
orohippus noun A genus of American Eocene mammals allied to the horse, but having four toes in front and three behind.
orologist noun One versed in orology.
orphaline noun See Orpheline.
orphaning present participle & vb. noun of Orphan
orphanage noun The state of being an orphan; orphanhood; orphans, collectively., An institution or asylum for the care of orphans.
orphanism noun Orphanhood.
orpharion noun An old instrument of the lute or cittern kind.
orpheline noun An orphan.
orthodome noun See the Note under Dome, 4.
orthodoxy noun Soundness of faith; a belief in the doctrines taught in the Scriptures, or in some established standard of faith; — opposed to heterodoxy or to heresy., Consonance to genuine Scriptural doctrines; — said of moral doctrines and beliefs; as, the orthodoxy of a creed., By extension, said of any correct doctrine or belief.
orthoepic adjective Alt. of Orthoepical
orthogamy noun Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; — opposed to heterogamy.
orthology noun The right description of things.
orthopedy noun The art or practice of curing the deformities of children, or, by extension, any deformities of the human body.
orthopn/a noun Alt. of Orthopny
orthopoda noun pl. An extinct order of reptiles which stood erect on the hind legs, and resembled birds in the structure of the feet, pelvis, and other parts.
orthotomy noun The property of cutting at right angles.
orthotone adjective Retaining the accent; not enclitic; — said of certain indefinite pronouns and adverbs when used interrogatively, which, when not so used, are ordinarilly enclitic.
oscillate verb i. To move backward and forward; to vibrate like a pendulum; to swing; to sway., To vary or fluctuate between fixed limits; to act or move in a fickle or fluctuating manner; to change repeatedly, back and forth.
oscitancy noun The act of gaping or yawning., Drowsiness; dullness; sluggishness.
osculated imp. & past participle of Osculate
osmateria plural of Osmaterium
osmiamate noun A salt of osmiamic acid.
osmometer noun An instrument for measuring the amount of osmotic action in different liquids.
osmometry noun The study of osmose by means of the osmometer.
oso-berry noun The small, blueblack, drupelike fruit of the Nuttallia cerasiformis, a shrub of Oregon and California, belonging to the Cherry tribe of Rosaceae.
osphradia plural of Osphradium
ossiculum noun Same as Ossicle.
ossifrage noun The lammergeir., The young of the sea eagle or bald eagle.
ossifying present participle & vb. noun of Ossify, Changing into bone; becoming bone; as, the ossifying process.
ossuarium noun A charnel house; an ossuary.
ostension noun The showing of the sacrament on the altar in order that it may receive the adoration of the communicants.
ostensive adjective Showing; exhibiting.
ostensory noun Same as Monstrance.
ostentate verb t. To make an ambitious display of; to show or exhibit boastingly.
ostentive adjective Ostentatious.
ostentous adjective Ostentatious.
osteocope noun Pain in the bones; a violent fixed pain in any part of a bone.
osteogeny noun The formation or growth of bone.
osteolite noun A massive impure apatite, or calcium phosphate.
osteology noun The science which treats of the bones of the vertebrate skeleton.
osteomata plural of Osteoma
osteomere noun An osteocomma.
osteotome noun Strong nippers or a chisel for dividing bone.
osteotomy noun The dissection or anatomy of bones; osteology., The operation of dividing a bone or of cutting a piece out of it, — done to remedy deformity, etc.
ostleress noun A female ostler.
ostracean noun Any one of a family of bivalves, of which the oyster is the type.
ostracion noun A genus of plectognath fishes having the body covered with solid, immovable, bony plates. It includes the trunkfishes.
ostracism noun Banishment by popular vote, — a means adopted at Athens to rid the city of a person whose talent and influence gave umbrage., Banishment; exclusion; as, social ostracism.
ostracite noun A fossil oyster.
ostracize verb t. To exile by ostracism; to banish by a popular vote, as at Athens., To banish from society; to put under the ban; to cast out from social, political, or private favor; as, he was ostracized by his former friends.
ostracoda noun pl. Ostracoidea.
ostracoid adjective Of or pertaining to the Ostracoidea., One of the Ostracoidea.
ostrogoth noun One of the Eastern Goths. See Goth.
otherness noun The quality or state of being other or different; alterity; oppositeness.
otherways adverb See Otherwise.
otherwise adverb In a different manner; in another way, or in other ways; differently; contrarily., In other respects., In different circumstances; under other conditions; as, I am engaged, otherwise I would accept.
otoba fat A colorless buttery substance obtained from the fruit of Myristica otoba, a species of nutmeg tree.
otoconite noun A mass of otoliths., An otolith.
otography noun A description of the ear.
otolithic adjective Alt. of Otolitic
otologist noun One skilled in otology; an aurist.
ottrelite noun A micaceous mineral occurring in small scales. It is characteristic of certain crystalline schists.
ouanderoo noun The wanderoo.
oubliette noun A dungeon with an opening only at the top, found in some old castles and other strongholds, into which persons condemned to perpetual imprisonment, or to perish secretly, were thrust, or lured to fall.
oughtness noun The state of being as a thing ought to be; rightness.
oughwhere adverb Anywhere; somewhere. See Owher.
ouroscopy noun Ourology.
outbabble verb t. To utter foolishly or excessively; to surpass in babbling.
outbidden of Outbid
outbidder noun One who outbids.
outbounds noun pl. The farthest or exterior bounds; extreme limits; boundaries.
outbrazen verb t. To bear down with a brazen face; to surpass in impudence.
outbreast verb t. To surpass in singing. See Breast, n., 6.
outcrafty verb t. To exceed in cunning.
outdazzle verb t. To surpass in dazzing.
outermost adjective Being on the extreme external part; farthest outward; as, the outermost row.
outfacing p pr. & vb. noun of Outface
outfitter noun One who furnishes outfits for a voyage, a journey, or a business.
outflying of Outfly
outground noun Ground situated at a distance from the house; outlying land.
outgrowth noun That which grows out of, or proceeds from, anything; an excrescence; an offshoot; hence, a result or consequence.
out-herod verb t. To surpass (Herod) in violence or wickedness; to exceed in any vicious or offensive particular.
outjuggle verb t. To surpass in juggling.
outkeeper noun An attachment to a surveyor’s compass for keeping tally in chaining.
outlander noun A foreigner.
outlawing present participle & vb. noun of Outlaw
outlining present participle & vb. noun of Outline
outlinear adjective Of or pertaining to an outline; being in, or forming, an outline.
outliving present participle & vb. noun of Outlive
outluster verb t. Alt. of Outlustre
outlustre verb t. To excel in brightness or luster.
outmantle verb t. To excel in mantling; hence, to excel in splendor, as of dress.
outnumber verb t. To exceed in number.
outparish noun A parish lying without the walls of, or in a remote part of, a town.
outpreach verb t. To surpass in preaching.
outquench verb t. To quench entirely; to extinguish.
outraging present participle & vb. noun of Outrage
outreason verb t. To excel or surpass in reasoning; to reason better than.
outreckon verb t. To exceed in reckoning or computation.
outrigger noun Any spar or projecting timber run out for temporary use, as from a ship’s mast, to hold a rope or a sail extended, or from a building, to support hoisting teckle., A projecting support for a rowlock, extended from the side of a boat., A boat thus equipped., A projecting contrivance at the side of a boat to prevent upsetting, as projecting spars with a log at the end.
outrunner noun An offshoot; a branch.
outsentry noun A sentry who guards the entrance or approach to a place; an outguard.
outspoken adjective Speaking, or spoken, freely, openly, or boldly; as, an outspoken man; an outspoken rebuke.
outspread verb t. To spread out; to expand; — usually as a past part. / adj.
outspring verb i. To spring out; to issue.
outstreet noun A street remote from the center of a town.
outstride verb t. To surpass in striding.
outstrike verb t. To strike out; to strike faster than.
outsuffer verb t. To exceed in suffering.
outtongue verb t. To silence by talk, clamor, or noise.
outtravel verb t. To exceed in speed o/ distance traveled.
ovalbumin noun Alt. of Ovalbumen
ovalbumen noun The albumin from white of eggs; egg albumin; — in distinction from serum albumin. See Albumin.
ovaliform adjective Having the form of an egg; having a figure such that any section in the direction of the shorter diameter will be circular, and any in the direction of the longer diameter will be oval.
overawing present participle & vb. noun of Overawe
overawful adjective Awful, or reverential, in an excessive degree.
overboard adverb Over the side of a ship; hence, from on board of a ship, into the water; as, to fall overboard.
overbreed verb t. To breed to excess.
overbuild verb t. To build over., To build too much; to build beyond the demand.
overbuilt adjective Having too many buildings; as, an overbuilt part of a town.
over-busy adjective Too busy; officious.
overcarry verb t. & i. To carry too far; to carry beyond the proper point.
overcatch verb t. To overtake.
overclimb verb t. To climb over.
overcloud verb t. To cover or overspread with clouds; to becloud; to overcast.
overcolor verb t. To color too highly.
overcomer noun One who overcomes.
overcount verb t. To rate too high; to outnumber.
overcover verb t. To cover up.
overcrowd verb t. To crowd too much.
overdight adjective Covered over.
overdoing present participle & vb. noun of Overdo
overdrawn past participle of Overdraw
overdress verb t. To dress or adorn to excess; to dress too much.
overdrink verb t. & i. To drink to excess.
overdtive verb t. & i. To drive too hard, or far, or beyond strength.
overdrown verb t. To wet or drench to excess.
overeager adjective Too eager; too impatient.
overempty verb t. To make too empty; to exhaust.
overexert verb t. To exert too much.
overfloat verb t. To overflow.
overflush verb t. To flush to excess.
overflown past participle of Overfly
overforce noun Excessive force; violence.
overfront verb t. To confront; to oppose; to withstand.
overglide verb t. To glide over.
overgloom verb t. To spread gloom over; to make gloomy; to overshadow.
overgoing present participle & vb. noun of Overgo
overgorge verb t. To gorge to excess.
overgrace verb t. To grace or honor exceedingly or beyond desert.
overgreat adjective Too great.
overgross adjective Too gross.
overgrown past participle of Overgrow
overhappy adjective Exceedingly happy.
overhardy adjective Too hardy; overbold.
overhaste noun Too great haste.
overhasty adjective Too hasty; precipitate; rash.
overheard imp. & past participle of Overhear
overheavy adjective Excessively heavy.
overissue noun An excessive issue; an issue, as of notes or bonds, exceeding the limit of capital, credit, or authority., To issue in excess.
overlabor verb t. To cause to labor excessively; to overwork., To labor upon excessively; to refine unduly.
overladed imp. of Overlade
overladen past participle of Overlade
overlarge adjective Too large; too great.
overlayer noun One who overlays; that with which anything is overlaid.
overlying present participle & vb. noun of Overlie, Lying over or upon something; as, overlying rocks.
overlight noun Too strong a light., Too light or frivolous; giddy.
overliver noun A survivor.
overlusty adjective Too lusty, or lively.
overmarch verb t. & i. To march too far, or too much; to exhaust by marching.
overmatch verb t. To be more than equal to or a match for; hence, to vanquish., To marry (one) to a superior., One superior in power; also, an unequal match; a contest in which one of the opponents is overmatched.
overmerit noun Excessive merit.
overmoist adjective Excessively moist.
overmount verb t. To mount over; to go higher than; to rise above.
overnight noun The fore part of the night last past; the previous evening., In the fore part of the night last past; in the evening before; also, during the night; as, the candle will not last overnight.
overnoise verb t. To overpower by noise.
overpaint verb t. To color or describe too strongly.
overperch verb t. To perch upon; to fly over.
overpoise verb t. To outweigh; to overbalance., Preponderant weight; a counterbalance.
overpower verb t. To excel or exceed in power; to cause to yield; to vanquish; to subdue; as, the light overpowers the eyes., A dominating power.
overpress verb t. To bear upon with irresistible force; to crush; to overwhelm., To overcome by importunity.
overprize verb t. Toprize excessively; to overvalue.
overproof adjective Containing more alcohol than proof spirit; stronger than proof spirit; that is, containing more than 49.3 per cent by weight of alcohol.
overproud adjective Exceedingly or unduly proud.
overquell verb t. To quell or subdue completely.
overraked imp. & past participle of Overrake
overrated imp. & past participle of Overrate
overreach verb t. To reach above or beyond in any direction., To deceive, or get the better of, by artifice or cunning; to outwit; to cheat., To reach too far, To strike the toe of the hind foot against the heel or shoe of the forefoot; — said of horses., To sail on one tack farther than is necessary., To cheat by cunning or deception., The act of striking the heel of the fore foot with the toe of the hind foot; — said of horses.
overready adjective Too ready.
overrigid adjective Too rigid; too severe.
overripen verb t. To make too ripe.
overroast verb t. To roast too much.
overruled imp. & past participle of Overrule
overruler noun One who, or that which, controls, governs, or determines.
overshade verb t. To cover with shade; to render dark or gloomy; to overshadow.
overshake verb t. To shake over or away; to drive away; to disperse.
overshine verb t. To shine over or upon; to illumine., To excel in shining; to outshine.
overshoot verb t. To shoot over or beyond., To pass swiftly over; to fly beyond., To exceed; as, to overshoot the truth., To fly beyond the mark.
oversight noun Watchful care; superintendence; general supervision., An overlooking; an omission; an error., Escape from an overlooked peril.
overskirt noun An upper skirt, shorter than the dress, and usually draped.
oversleep verb t. To sleep beyond; as, to oversleep one’s self or one’s usual hour of rising., To sleep too long.
overslide verb t. To slide over or by.
overspeak verb t. & i. To exceed in speaking; to speak too much; to use too many words.
overstand verb t. To stand on the price or conditions of, so as to lose a sale; to lose by an extravagant price or hard conditions.
overstare verb t. To outstare., To stare wildly.
overstate verb t. To state in too strong terms; to exaggerate.
overstaid of Overstay
overstock noun Stock in excess., To fill too full; to supply in excess; as, to overstock a market with goods, or a farm with cattle.
overstore verb t. To overstock.
overstraw verb t. To overstrew.
overstrew verb t. To strew or scatter over.
overstrow verb t. See Overstrew.
overswell verb t. & i. To swell or rise above; to overflow.
overtaken past participle of Overtake
overtempt verb t. To tempt exceedingly, or beyond the power of resistance.
overthrew imp. of Overthrow
overthrow verb t. To throw over; to overturn; to upset; to turn upside down., To cause to fall or to fail; to subvert; to defeat; to make a ruin of; to destroy., The act of overthrowing; the state of being overthrow; ruin., The act of throwing a ball too high, as over a player’s head., A faulty return of the ball by a fielder, so that the striker makes an additional run.
overtitle verb t. To give too high a title to.
overtower verb t. To tower over or above., To soar too high.
overtrade verb i. To trade beyond one’s capital; to buy goods beyond the means of paying for or seleng them; to overstock the market.
overtread verb t. To tread over or upon.
overtrust noun Excessive confidence., To trust too much.
overvalue verb t. To value excessively; to rate at too high a price., To exceed in value.
overwatch verb t. To watch too much., To weary or exhaust by watching.
overweary verb t. To weary too much; to tire out.
overweigh verb t. To exceed in weight; to overbalance; to weigh down.
overwhelm verb t. To cover over completely, as by a great wave; to overflow and bury beneath; to ingulf; hence, figuratively, to immerse and bear down; to overpower; to crush; to bury; to oppress, etc., overpoweringly., To project or impend over threateningly., To cause to surround, to cover., The act of overwhelming.
overwrest verb t. To wrest or force from the natural or proper position.
oviferous adjective Egg-bearing; — applied particularly to certain receptacles, as in Crustacea, that retain the eggs after they have been excluded from the formative organs, until they are hatched.
ovigerons adjective Bearing eggs; oviferous.
oviparity noun Generation by means of ova. See Generation.
oviparous adjective Producing young from rggs; as, an oviparous animal, in which the egg is generally separated from the animal, and hatched after exclusion; — opposed to viviparous.
ovococcus noun A germinal vesicle.
ovoplasma noun Yolk; egg yolk.
ovulation noun The formation of ova or eggs in the ovary, and the discharge of the same. In the mammalian female the discharge occurs during menstruation.
ownerless adjective Without an owner.
ownership noun The state of being an owner; the right to own; exclusive right of possession; legal or just claim or title; proprietorship.
oxalantin noun A white crystalline nitrogenous substance (C6H4N4O5) obtained by the reduction of parabanic acid; — called also leucoturic acid.
oxalurate noun A salt of oxaluric acid.
oxamidine noun One of a series of bases containing the amido and the isonitroso groups united to the same carbon atom.
oxanilate noun A salt of oxanilic acid.
oxanilide noun a white crystalline substance, resembling oxanilamide, obtained by heating aniline oxalate, and regarded as a double anilide of oxalic acid; — called also diphenyl oxamide.
oxidating present participle & vb. noun of Oxidate
oxidation noun The act or process of oxidizing, or the state or result of being oxidized.
oxidizing present participle & vb. noun of Oxidize
oxyacetic adjective Hydroxyacetic; designating an acid called also glycolic acid.
oxybromic adjective Pertaining to, or designating, certain compounds of oxygen and bromine.
oxycymene noun Hydroxy cymene. Same as Carvacrol.
oxygenate verb t. To unite, or cause to combine, with oxygen; to treat with oxygen; to oxidize; as, oxygenated water (hydrogen dioxide).
oxygenium noun The technical name of oxygen.
oxygenize verb t. To oxidize.
oxygenous adjective Oxygenic.
oxygonial adjective Having acute angles.
oxyphenic adjective Pertaining to, or designating, the phenol formerly called oxyphenic acid, and now oxyphenol and pyrocatechin. See Pyrocatechin.
oxyphenol noun A phenol, /////, produced by the distillation of catechin; called also oxyphenic acid, and now pyrocatechin.
oystering noun Gathering, or dredging for, oysters.
ozocerite noun A waxlike mineral resin; — sometimes called native paraffin, and mineral wax.
ozonation noun The act of treating with ozone; also, the act of converting into, or producing, ozone; ozonization.
ozonizing present participle & vb. noun of Ozonize