| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| orangeroot | noun | An American ranunculaceous plant (Hidrastis Canadensis), having a yellow tuberous root; — also called yellowroot, golden seal, etc. |
| oratorical | adjective | Of or pertaining to an orator or to oratory; characterized by oratory; rhetorical; becoming to an orator; as, an oratorical triumph; an oratorical essay. |
| oratorious | adjective | Oratorical. |
| orbiculate | noun | That which is orbiculate; especially, a solid the vertical section of which is oval, and the horizontal section circular., Alt. of Orbiculated |
| orcharding | noun | The cultivation of orchards., Orchards, in general. |
| orchardist | noun | One who cultivates an orchard. |
| orchestian | noun | Any species of amphipod crustacean of the genus Orchestia, or family Orchestidae. See Beach flea, under Beach. |
| orchestral | adjective | Of or pertaining to an orchestra; suitable for, or performed in or by, an orchestra. |
| orchestric | adjective | Orchestral. |
| orchideous | adjective | Same as Orchidaceous. |
| ordainable | adjective | Capable of being ordained; worthy to be ordained or appointed. |
| ordainment | noun | Ordination. |
| ordinalism | noun | The state or quality of being ordinal. |
| ordinarily | adverb | According to established rules or settled method; as a rule; commonly; usually; in most cases; as, a winter more than ordinarily severe. |
| ordinaries | plural | of Ordinary |
| ordinately | adverb | In an ordinate manner; orderly. |
| ordination | noun | The act of ordaining, appointing, or setting apart; the state of being ordained, appointed, etc., The act of setting apart to an office in the Christian ministry; the conferring of holy orders., Disposition; arrangement; order. |
| ordinative | adjective | Tending to ordain; directing; giving order. |
| ordonnance | noun | The disposition of the parts of any composition with regard to one another and the whole. |
| ordovician | adjective | Of or pertaining to a division of the Silurian formation, corresponding in general to the Lower Silurian of most authors, exclusive of the Cambrian., The Ordovician formation. |
| oreography | noun | The science of mountains; orography. |
| organicism | noun | The doctrine of the localization of disease, or which refers it always to a material lesion of an organ. |
| organizing | present participle & vb. noun | of Organize |
| organogeny | noun | Organogenesis. |
| organology | noun | The science of organs or of anything considered as an organic structure., That branch of biology which treats, in particular, of the organs of animals and plants. See Morphology. |
| organonymy | noun | The designation or nomenclature of organs. |
| orientated | imp. & past participle | of Orientate |
| orientness | noun | The quality or state of being orient or bright; splendor. |
| originable | adjective | Capable of being originated. |
| originally | adverb | In the original time, or in an original manner; primarily; from the beginning or origin; not by derivation, or imitation., At first; at the origin; at the time of formation or costruction; as, a book originally written by another hand. |
| originated | imp. & past participle | of Originate |
| originator | noun | One who originates. |
| orismology | noun | That departament of natural history which treats of technical terms. |
| ornamented | imp. & past participle | of Ornament |
| ornamental | adjective | Serving to ornament; characterized by ornament; beautifying; embellishing. |
| ornamenter | noun | One who ornaments; a decorator. |
| ornateness | noun | The quality of being ornate. |
| orographic | adjective | Alt. of Orographical |
| orological | adjective | Of or pertaining to orology. |
| orotundity | noun | The orotund mode of intonation. |
| orphanhood | noun | The state or condition of being an orphan; orphanage. |
| orsellinic | adjective | Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid. |
| ortalidian | noun | Any one of numerous small two-winged flies of the family Ortalidae. The larvae of many of these flies live in fruit; those of others produce galls on various plants. |
| orthoceras | noun | An extinct genus of Paleozoic Cephalopoda, having a long, straight, conical shell. The interior is divided into numerous chambers by transverse septa. |
| orthoclase | noun | Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar. |
| orthodoxal | adjective | Pertaining to, or evincing, orthodoxy; orthodox. |
| orthodoxly | adverb | In an orthodox manner; with soundness of faith. |
| orthodromy | noun | The act or art of sailing on a great circle. |
| orthoepist | noun | One who is skilled in orthoepy. |
| orthogonal | adjective | Right-angled; rectangular; as, an orthogonal intersection of one curve with another. |
| orthometry | noun | The art or practice of constructing verses correctly; the laws of correct versification. |
| orthopedic | adjective | Alt. of Orthopedical |
| orthophony | noun | The art of correct articulation; voice training. |
| orthopraxy | noun | The treatment of deformities in the human body by mechanical appliances. |
| orthoptera | noun pl. | An order of mandibulate insects including grasshoppers, locusts, cockroaches, etc. See Illust. under Insect. |
| orthoscope | noun | An instrument designed to show the condition of the superficial portions of the eye. |
| orthostade | noun | A chiton, or loose, ungirded tunic, falling in straight folds. |
| orthotomic | adjective | Cutting at right angles. |
| orycterope | noun | Same as Oryctere. |
| oryctology | noun | An old name for paleontology., An old name for mineralogy and geology. |