| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| obdormition | noun | Sleep. |
| obduredness | noun | Hardness. |
| obediential | adjective | According to the rule of obedience. |
| obfirmation | noun | Hardness of heart; obduracy. |
| obfuscating | present participle & vb. noun | of Obfuscate |
| obfuscation | noun | The act of darkening or bewildering; the state of being darkened. |
| obimbricate | adjective | Imbricated, with the overlapping ends directed downward. |
| objectivate | verb t. | To objectify. |
| objectively | adverb | In the manner or state of an object; as, a determinate idea objectively in the mind. |
| objectivity | noun | The state, quality, or relation of being objective; character of the object or of the objective. |
| objurgating | present participle & vb. noun | of Objurgate |
| objurgation | noun | The act of objurgating; reproof. |
| objurgatory | adjective | Designed to objurgate or chide; containing or expressing reproof; culpatory. |
| oblatration | noun | The act of oblatrating; a barking or snarling. |
| oblectation | noun | The act of pleasing highly; the state of being greatly pleased; delight. |
| obliquation | noun | The act of becoming oblique; a turning to one side; obliquity; as, the obliquation of the eyes., Deviation from moral rectitude. |
| obliqueness | noun | Quality or state of being oblique. |
| obliquities | plural | of Obliquity |
| obliterated | imp. & past participle | of Obliterate |
| obluctation | noun | A struggle against; resistance; opposition. |
| obscenities | plural | of Obscenity |
| obscuration | verb t. | The act or operation of obscuring; the state of being obscured; as, the obscuration of the moon in an eclipse. |
| obscurement | noun | The act of obscuring, or the state of being obscured; obscuration. |
| obscureness | noun | Obscurity. |
| obsecrating | present participle & vb, noun | of Obsecrate |
| obsecration | noun | The act of obsecrating or imploring; as, the obsecrations of the Litany, being those clauses beginning with “By.”, A figure of speech in which the orator implores the assistance of God or man. |
| obsecratory | adjective | Expressing, or used in, entreaty; supplicatory. |
| obsequience | noun | Obsequiousness. |
| observandum | noun | A thing to be observed. |
| observantly | adverb | In an observant manner. |
| observation | noun | The act or the faculty of observing or taking notice; the act of seeing, or of fixing the mind upon, anything., The result of an act, or of acts, of observing; view; reflection; conclusion; judgment., Hence: An expression of an opinion or judgment upon what one has observed; a remark., Performance of what is prescribed; adherence in practice; observance., The act of recognizing and noting some fact or occurrence in nature, as an aurora, a corona, or the structure of an animal., Specifically, the act of measuring, with suitable instruments, some magnitude, as the time of an occultation, with a clock; the right ascension of a star, with a transit instrument and clock; the sun’s altitude, or the distance of the moon from a star, with a sextant; the temperature, with a thermometer, etc., The information so acquired. |
| observative | adjective | Observing; watchful. |
| observatory | noun | A place or building for making observations on the heavenly bodies., A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena., A place, as an elevated chamber, from which a view may be observed or commanded., A lookout on a flank of a battery whence an officer can note the range and effect of the fire. |
| obsignation | noun | The act of sealing or ratifying; the state of being sealed or confirmed; confirmation, as by the Holy Spirit. |
| obsignatory | adjective | Ratifying; confirming by sealing. |
| obsolescent | adjective | Going out of use; becoming obsolete; passing into desuetude. |
| obstetrical | adjective | Of or pertaining to midwifery, or the delivery of women in childbed; as, the obstetric art. |
| obstination | noun | Obstinacy; stubbornness. |
| obstipation | noun | The act of stopping up, as a passage., Extreme constipation. |
| obstriction | noun | The state of being constrained, bound, or obliged; that which constrains or obliges; obligation; bond. |
| obstructing | present participle & vb. noun | of Obstruct |
| obstruction | noun | The act of obstructing, or state of being obstructed., That which obstructs or impedes; an obstacle; an impediment; a hindrance., The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death. |
| obstructive | adjective | Tending to obstruct; presenting obstacles; hindering; causing impediment., An obstructive person or thing. |
| obtemperate | verb t. | To obey. |
| obtestation | noun | The act of obtesting; supplication; protestation. |
| obumbration | noun | Act of darkening or obscuring. |
| occasioning | present participle & vb. noun | of Occasion |
| occasionate | verb t. | To occasion. |
| occidentals | nounpl. | Western Christians of the Latin rite. See Orientals. |
| occultation | noun | The hiding of a heavenly body from sight by the intervention of some other of the heavenly bodies; — applied especially to eclipses of stars and planets by the moon, and to the eclipses of satellites of planets by their primaries., Fig.: The state of being occult. |
| ochlocratic | adjective | Alt. of Ochlocratical |
| octahedrite | noun | Titanium dioxide occurring in acute octahedral crystals. |
| octodecimos | plural | of Octodecimo |
| octodentate | adjective | Having eight teeth. |
| octoedrical | adjective | See Octahedral. |
| octolocular | adjective | Having eight cells for seeds. |
| octonocular | adjective | Having eight eyes. |
| odometrical | adjective | Of or pertaining to the odometer, or to measurements made with it. |
| odontoblast | noun | One of the more or less columnar cells on the outer surface of the pulp of a tooth; an odontoplast. They are supposed to be connected with the formation of dentine., One of the cells which secrete the chitinous teeth of Mollusca. |
| odontograph | noun | An instrument for marking or laying off the outlines of teeth of gear wheels. |
| odontophora | nounpl. | Same as Cephalophora. |
| odontophore | noun | A special structure found in the mouth of most mollusks, except bivalves. It consists of several muscles and a cartilage which supports a chitinous radula, or lingual ribbon, armed with teeth. Also applied to the radula alone. See Radula. |
| odontoplast | noun | An odontoblast. |
| odoriferous | adjective | Bearing or yielding an odor; perfumed; usually, sweet of scent; fragrant; as, odoriferous spices, particles, fumes, breezes. |
| oeconomical | adjective | See Economical. |
| oecumenical | adjective | See Ecumenical. |
| oenanthylic | adjective | Pertaining to, derived from, or containing, oenanthyl; specifically, designating an acid formerly supposed to be identical with the acid in oenanthic ether, but now known to be identical with heptoic acid. |
| oenophilist | noun | A lover of wine. |
| oenothionic | adjective | Pertaining to an acid now called sulphovinic, / ethyl sulphuric, acid. |
| oesophageal | adjective | Same as Esophagus, Esophageal, etc. |
| oestruation | noun | The state of being under oestrual influence, or of having sexual desire. |
| offenseless | adjective | Unoffending; inoffensive. |
| offertories | plural | of Offertory |
| officialism | noun | The state of being official; a system of official government; also, adherence to office routine; red-tapism. |
| officialily | noun | See Officialty. |
| officiating | present participle & vb. noun | of Officiate |
| offscouring | noun | That which is scoured off; hence, refuse; rejected matter; that which is vile or despised. |
| offuscation | See Obfuscate, Obfuscation. | |
| old-maidish | adjective | Like an old maid; prim; precise; particular. |
| old-maidism | noun | The condition or characteristics of an old maid. |
| olfactories | plural | of Olfactory |
| oligandrous | adjective | Having few stamens. |
| oliganthous | adjective | Having few flowers. |
| oligarchist | noun | An advocate or supporter of oligarchy. |
| oligarchies | plural | of Oligarchy |
| oligochaeta | noun pl. | An order of Annelida which includes the earthworms and related species. |
| oligomerous | adjective | Having few members in each set of organs; as, an oligomerous flower. |
| oligotokous | adjective | Producing few young. |
| omnifarious | adjective | Of all varieties, forms, or kinds. |
| omniformity | noun | The condition or quality of having every form. |
| omniparient | adjective | Producing or bringing forth all things; all-producing. |
| omnipatient | adjective | Capable of enduring all things. |
| omnipotence | noun | Alt. of Omnipotency |
| omnipotency | noun | The state of being omnipotent; almighty power; hence, one who is omnipotent; the Deity., Unlimited power of a particular kind; as, love’s omnipotence. |
| omnipresent | adjective | Present in all places at the same time; ubiquitous; as, the omnipresent Jehovah. |
| omniscience | noun | The quality or state of being omniscient; — an attribute peculiar to God. |
| omnisciency | noun | Omniscience. |
| omphalocele | noun | A hernia at the navel. |
| omphalopter | noun | Alt. of Omphaloptic |
| omphaloptic | noun | An optical glass that is convex on both sides. |
| omphalotomy | noun | The operation of dividing the navel-string. |
| onagraceous | adjective | Alt. of Onagrarieous |
| oneiromancy | noun | Divination by means of dreams. |
| oneiroscopy | noun | The interpretation of dreams. |
| onirocritic | adjective | See Oneirocritic. |
| onomantical | adjective | Of or pertaining to onomancy. |
| onomasticon | noun | A collection of names and terms; a dictionary; specif., a collection of Greek names, with explanatory notes, made by Julius Pollux about A.D.180. |
| onomatechny | noun | Prognostication by the letters of a name. |
| onomatology | noun | The science of names or of their classification. |
| ontogenesis | noun | Alt. of Ontogeny |
| ontogenetic | adjective | Of or pertaining to ontogenesis; as, ontogenetic phenomena. |
| ontological | adjective | Of or pertaining to ontology. |
| onychomancy | noun | Divination by the nails. |
| onychophora | noun pl. | Malacopoda. |
| oophoridium | noun | The macrosporangium or case for the larger kind of spores in heterosporous flowerless plants. |
| oosporangia | plural | of Oosporangium |
| opalescence | noun | A reflection of a milky or pearly light from the interior of a mineral, as in the moonstone; the state or quality of being opalescent. |
| opeidoscope | noun | An instrument, consisting of a tube having one end open and the other end covered with a thin flexible membrance to the center of which is attached a small mirror. It is used for exhibiting upon a screen, by means of rays reflected from the mirror, the vibratory motions caused by sounds produced at the open end of the tube, as by speaking or singing into it. |
| open-handed | adjective | Generous; liberal; munificent. |
| open-headed | adjective | Bareheaded. |
| operatively | adverb | In an operative manner. |
| operculated | adjective | Closed by a lid or cover, as the capsules of the mosses., Having an operculum, or an apparatus for protecting the gills; — said of shells and of fishes. |
| opertaneous | adjective | Concealed; private. |
| ophiologist | noun | One versed in the natural history of serpents. |
| ophiomorpha | noun pl. | An order of tailless amphibians having a slender, wormlike body with regular annulations, and usually with minute scales imbedded in the skin. The limbs are rudimentary or wanting. It includes the caecilians. Called also Gymnophiona and Ophidobatrachia. |
| ophiophagus | noun | A genus of venomous East Indian snakes, which feed on other snakes. Ophiophagus elaps is said to be the largest and most deadly of poisonous snakes. |
| ophiuroidea | noun pl. | A class of star-shaped echinoderms having a disklike body, with slender, articulated arms, which are not grooved beneath and are often very fragile; — called also Ophiuroida and Ophiuridea. See Illust. under Brittle star. |
| ophthalmite | noun | An eyestalk; the organ which bears the compound eyes of decapod Crustacea. |
| opiniatrety | noun | Obstinacy in opinious. |
| opinionable | adjective | Being, or capable of being, a matter of opinion; that can be thought; not positively settled; as, an opinionable doctrine. |
| opinionated | adjective | Stiff in opinion; firmly or unduly adhering to one’s own opinion or to preconceived notions; obstinate in opinion. |
| opinionator | noun | An opinionated person; one given to conjecture. |
| opisthodome | noun | A back chamber; especially, that part of the naos, or cella, farthest from the main entrance, sometimes having an entrance of its own, and often used as a treasury. |
| opitulation | noun | The act of helping or aiding; help. |
| opobalsamum | noun | The old name of the aromatic resinous juice of the Balsamodendron opobalsamum, now commonly called balm of Gilead. See under Balm. |
| oppignerate | verb i. | To pledge; to pawn. |
| opportunism | noun | The art or practice of taking advantage of opportunities or circumstances, or of seeking immediate advantage with little regard for ultimate consequences. |
| opportunist | noun | One who advocates or practices opportunism. |
| opportunity | noun | Fit or convenient time; a time or place favorable for executing a purpose; a suitable combination of conditions; suitable occasion; chance., Convenience of situation; fitness., Importunity; earnestness. |
| opprobrious | adjective | Expressive of opprobrium; attaching disgrace; reproachful; scurrilous; as, opprobrious language., Infamous; despised; rendered hateful; as, an opprobrious name. |
| oppugnation | noun | Opposition. |
| orangetawny | adjective & noun | Deep orange-yellow; dark yellow. |
| orbiculated | adjective | Made, or being, in the form of an orb; having a circular, or nearly circular, or a spheroidal, outline. |
| orbitolites | noun | A genus of living Foraminifera, forming broad, thin, circular disks, containing numerous small chambers. |
| orbitonasal | adjective | Of or pertaining to the orbit and the nose; as, the orbitonasal, or ophthalmic, nerve. |
| orchestrion | noun | A large music box imitating a variety of orchestral instruments. |
| orchidology | noun | The branch of botany which treats of orchids. |
| orderliness | noun | The state or quality of being orderly. |
| oreographic | adjective | Of or pertaining to oreography. |
| organically | adverb | In an organic manner; by means of organs or with reference to organic functions; hence, fundamentally. |
| organizable | adjective | Capable of being organized; esp. (Biol.), capable of being formed into living tissue; as, organizable matter. |
| organogenic | adjective | Of or pertaining to organogenesis. |
| organophyly | noun | The tribal history of organs, — a branch of morphophyly. |
| organoscopy | noun | Phrenology. |
| orientalism | noun | Any system, doctrine, custom, expression, etc., peculiar to Oriental people., Knowledge or use of Oriental languages, history, literature, etc. |
| orientalist | noun | An inhabitant of the Eastern parts of the world; an Oriental., One versed in Eastern languages, literature, etc.; as, the Paris Congress of Orientalists. |
| orientality | noun | The quality or state of being oriental or eastern. |
| orientalize | verb t. | to render Oriental; to cause to conform to Oriental manners or conditions. |
| orientating | present participle & vb. noun | of Orientate |
| orientation | noun | The act or process of orientating; determination of the points of the compass, or the east point, in taking bearings., The tendency of a revolving body, when suspended in a certain way, to bring the axis of rotation into parallelism with the earth’s axis., An aspect or fronting to the east; especially (Arch.), the placing of a church so that the chancel, containing the altar toward which the congregation fronts in worship, will be on the east end., Fig.: A return to first principles; an orderly arrangement. |
| originalist | noun | One who is original. |
| originality | noun | The quality or state of being original. |
| originating | present participle & vb. noun | of Originate |
| origination | noun | The act or process of bringing or coming into existence; first production., Mode of production, or bringing into being. |
| originative | adjective | Having power, or tending, to originate, or bring into existence; originating. |
| ornamenting | present participle & vb. noun | of Ornament |
| ornitholite | noun | The fossil remains of a bird., A stone of various colors bearing the figures of birds. |
| ornithology | noun | That branch of zoology which treats of the natural history of birds and their classification., A treatise or book on this science. |
| ornithopoda | noun pl. | An order of herbivorous dinosaurs with birdlike characteristics in the skeleton, esp. in the pelvis and hind legs, which in some genera had only three functional toes, and supported the body in walking as in Iguanodon. See Illust. in Appendix. |
| ornithotomy | noun | The anatomy or dissection of birds. |
| orthocenter | noun | That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect. |
| orthodromic | adjective | Of or pertaining to orthodromy. |
| orthoepical | adjective | Of or pertaining to orthoepy, or correct pronunciation. |
| orthography | noun | The art or practice of writing words with the proper letters, according to standard usage; conventionally correct spelling; also, mode of spelling; as, his orthography is vicious., The part of grammar which treats of the letters, and of the art of spelling words correctly., A drawing in correct projection, especially an elevation or a vertical section. |
| orthometric | adjective | Having the axes at right angles to one another; — said of crystals or crystalline forms. |
| orthopedist | noun | One who prevents, cures, or remedies deformities, esp. in children. |
| orthopteran | noun | One of the Orthoptera. |
| orthoscopic | adjective | Giving an image in correct or normal proportions; giving a flat field of view; as, an orthoscopic eyepiece. |
| orthostichy | noun | A longitudinal rank, or row, of leaves along a stem. |
| orthotomous | adjective | Having two cleavages at right angles with one another. |
| orthotropal | adjective | Alt. of Orthotropous |
| orthotropic | adjective | Having the longer axis vertical; — said of erect stems. |
| orthoxylene | noun | That variety of xylene in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene. |
| oryctognosy | noun | Mineralogy. |
| oscillating | present participle & vb. noun | of Oscillate, That oscillates; vibrating; swinging. |
| oscillation | noun | The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration., Fluctuation; variation; change back and forth. |
| oscillative | adjective | Tending to oscillate; vibratory. |
| oscillatory | adjective | Moving, or characterized by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion. |
| ossiculated | adjective | Having small bones. |
| ossifragous | adjective | Serving to break bones; bone-breaking. |
| ostensively | adverb | In an ostensive manner. |
| ostensorium | noun | Alt. of Ostensory |
| ostentation | noun | The act of ostentating or of making an ambitious display; unnecessary show; pretentious parade; — usually in a detractive sense., A show or spectacle. |
| osteoclasis | noun | The operation of breaking a bone in order to correct deformity. |
| osteocommas | plural | of Osteocomma |
| osteography | noun | The description of bones; osteology. |
| osteologist | noun | One who is skilled in osteology; an osteologer. |
| osteoplasty | noun | An operation or process by which the total or partial loss of a bone is remedied. |
| osteotomist | noun | One skilled in osteotomy. |
| ostracizing | present participle & vb. noun | of Ostracize |
| ostracoidea | noun pl. | An order of Entomostraca possessing hard bivalve shells. They are of small size, and swim freely about. |
| ostreaceous | adjective | Of or pertaining to an oyster, or to a shell; shelly. |
| ostriferous | adjective | Producing oysters; containing oysters. |
| ostrogothic | adjective | Of or pertaining to the Ostrogoths. |
| otherwhiles | adverb | At another time, or other times; sometimes; /ccasionally. |
| outbreaking | noun | The act of breaking out., That which bursts forth. |
| outbuilding | present participle & vb. noun | of Outbuild, A building separate from, and subordinate to, the main house; an outhouse. |
| outfangthef | verb t. | A thief from without or abroad, taken within a lord’s fee or liberty., The privilege of trying such a thief. |
| outmaneuver | verb t. | Alt. of Outmanoeuvre |
| out-of-door | adjective | Being out of the house; being, or done, in the open air; outdoor; as, out-of-door exercise. See Out of door, under Out, adv. |
| outparamour | verb t. | To exceed in the number of mistresses. |
| out-patient | noun | A patient who is outside a hospital, but receives medical aid from it. |
| outscouring | noun | That which is scoured out o/ washed out. |
| outstanding | adjective | That stands out; undischarged; uncollected; not paid; as, outstanding obligations. |
| outstripped | imp. & past participle | of Outstrip |
| overagitate | verb t. | To agitate or discuss beyond what is expedient. |
| overanxiety | noun | The state of being overanxious; excessive anxiety. |
| overanxious | adjective | Anxious in an excessive or needless degree. |
| overbalance | verb t. | To exceed equality with; to outweigh., To cause to lose balance or equilibrium., Excess of weight or value; something more than an equivalent; as, an overbalance of exports. |
| overbearing | adjective | Overpowering; subduing; repressing., Aggressively haughty; arrogant; domineering; tyrannical; dictatorial; insolent. |
| overbookish | adjective | Excessively bookish. |
| overcapable | adjective | Too capable. |
| overcareful | adjective | Too careful. |
| overcarking | adjective | Too anxious; too full of care. |
| overcunning | adjective | Exceedingly or excessively cunning. |
| overcurious | adjective | Too curious. |
| overdrawing | present participle & vb. noun | of Overdraw |
| overearnest | adjective | Too earnest. |
| overelegant | adjective | Too elegant. |
| overfatigue | noun | Excessive fatigue., To fatigue to excess; to tire out. |
| overfeeding | present participle & vb. noun | of Overfeed |
| overflowing | present participle & vb. noun | of Overflow, An overflow; that which overflows; exuberance; copiousness. |
| overflutter | verb t. | To flutter over. |
| overforward | adjective | Forward to excess; too forward. |
| overfraught | of Overfreight | |
| overfreight | verb t. | To put too much freight in or upon; to load too full, or too heavily; to overload. |
| overgrassed | adjective | Overstocked, or overgrown, or covered, with grass. |
| overgrowing | present participle & vb. noun | of Overgrow |
| overhanging | present participle & vb. noun | of Overhang |
| overhauling | of Overhaul, A strict examination with a view to correction or repairs. | |
| overhearing | present participle & vb. noun | of Overhear |
| overhipping | present participle & vb. noun | of Overhip |
| overjealous | adjective | Excessively jealous; too jealous. |
| overknowing | adjective | Too knowing or too cunning. |
| overlabored | imp. & past participle | of Overlabor |
| overlashing | noun | Excess; exaggeration. |
| overlearned | adjective | Too learned. |
| overleather | noun | Upper leather. |
| overliberal | adjective | Too liberal. |
| overloading | present participle & vb. noun | of Overload |
| overlogical | adjective | Excessively logical; adhering too closely to the forms or rules of logic. |
| overlooking | present participle & vb. noun | of Overlook |
| overmagnify | verb t. | To magnify too much. |
| overmeasure | verb t. | To measure or estimate too largely., Excessive measure; the excess beyond true or proper measure; surplus. |
| overpassing | present participle & vb. noun | of Overpass |
| overpatient | adjective | Patient to excess. |
| overpicture | verb t. | To surpass nature in the picture or representation of. |
| overpowered | imp. & past participle | of Overpower |
| overprovoke | verb t. | To provoke excessively. |
| overreached | imp. & past participle | of Overreach |
| overreacher | noun | One who overreaches; one who cheats; a cheat. |
| overrunning | present participle & vb. noun | of Overrun |
| overscented | adjective | Scented excessively., Covered or concealed by a different odor. |
| overselling | present participle & vb. noun | of Oversell |
| oversetting | present participle & vb. noun | of Overset |
| overshadowy | adjective | Overshadowing. |
| overstating | present participle & vb. noun | of Overstate |
| overstaying | present participle & vb. noun | of Overstay |
| overstepped | imp. & past participle | of Overstep |
| overstocked | imp. & past participle | of Overstock |
| oversubtile | adjective | Excessively subtile. |
| overtedious | adjective | Too tedious. |
| overtopping | present participle & vb. noun | of Overtop |
| overtrading | noun | The act or practice of buying goods beyond the means of payment; a glutting of the market. |
| overturning | present participle & vb. noun | of Overturn |
| overvaluing | present participle & vb. noun | of Overvalue |
| overweather | verb t. | To expose too long to the influence of the weather. |
| overweening | adjective | Unduly confident; arrogant; presumptuous; conceited., Conceit; arrogance. |
| overwhelmed | imp. & past participle | of Overwhelm |
| overwrought | of Overwork, Wrought upon excessively; overworked; overexcited. | |
| overworking | present participle & vb. noun | of Overwork |
| overwrestle | verb t. | To subdue by wrestling. |
| overzealous | adjective | Too zealous. |
| ovipositing | present participle & vb. noun | of Oviposit, Alt. of Oviposition |
| oviposition | noun | The depositing of eggs, esp. by insects. |
| ovuliferous | adjective | Producing ovules. |
| oxaluramide | noun | Same as Oxalan. |
| oxidability | noun | Capability of being converted into an oxide. |
| oxidizement | noun | Oxidation. |
| oxychloride | noun | A ternary compound of oxygen and chlorine; as, plumbic oxychloride. |
| oxygenating | present participle & vb. noun | of Oxygenate |
| oxygenation | noun | The act or process of combining or of treating with oxygen; oxidation. |
| oxygenizing | p pr. & vb. noun | of Oxygenize |
| oxyhydrogen | adjective | Of or pertaining to a mixture of oxygen and hydrogen; as, oxyhydrogen gas. |
| oxymuriatic | adjective | Pertaining to, or consisting of, oxygen and muriatic acid, that is, hydrochloric acid. |
| oxyrrhodine | noun | A mixture of two parts of the oil of roses with one of the vinegar of roses. |
| oxysulphide | noun | A ternary compound of oxygen and sulphur. |
| ozonization | noun | Ozonation. |
| ozonometric | adjective | Pertaining to, or used for, the determination of the amount of ozone; of or relating to ozonometry. |
| ozonoscopic | adjective | Serving to indicate the presence or the amount of ozone. |