9-letter words starting with op
- opinioned — having an opinion, especially of a specified kind.
- opisthion — (anatomy) The middle of the posterior, or dorsal, margin of the great foramen of the skull.
- opium den — 19th-century place of drug taking
- opium war — a war between Great Britain and China that began in 1839 as a conflict over the opium trade and ended in 1842 with the Chinese cession of Hong Kong to the British, the opening of five Chinese ports to foreign merchants, and the grant of other commercial and diplomatic privileges in the Treaty of Nanking.
- opodeldoc — a medical liniment made by mixing soap, alcohol, and essential oils
- oppenheim — E(dward) Phillips, 1866–1946, English novelist.
- oppilated — Simple past tense and past participle of oppilate.
- opponency — an act or instance of opposing.
- opponents — Plural form of opponent.
- opportune — appropriate, favorable, or suitable: an opportune phrase for the occasion.
- opposable — capable of being placed opposite to something else: the opposable thumb of primates.
- opposers' — to act against or provide resistance to; combat.
- opposites — situated, placed, or lying face to face with something else or each other, or in corresponding positions with relation to an intervening line, space, or thing: opposite ends of a room.
- oppressed — to burden with cruel or unjust impositions or restraints; subject to a burdensome or harsh exercise of authority or power: a people oppressed by totalitarianism.
- oppresses — Third-person singular simple present indicative form of oppress.
- oppressor — to burden with cruel or unjust impositions or restraints; subject to a burdensome or harsh exercise of authority or power: a people oppressed by totalitarianism.
- oppugnant — opposing; antagonistic; contrary.
- oppugners — Plural form of oppugner.
- oppugning — Present participle of oppugn.
- opsomania — an extreme enthusiasm for a particular food
- opsonized — Simple past tense and past participle of opsonize.
- optatives — Plural form of optative.
- opthalmic — Misspelling of ophthalmic.
- optically — of, relating to, or applying optics or the principles of optics.
- opticians — Plural form of optician.
- optimally — optimum (def 3).
- optimised — to make as effective, perfect, or useful as possible.
- optimiser — Alternative spelling of optimizer.
- optimises — Third-person singular simple present indicative form of optimise.
- optimists — an optimistic person.
- optimized — to make as effective, perfect, or useful as possible.
- optimizer — A person in a large business whose task is to maximize profits and make the business more efficient.
- optimizes — Third-person singular simple present indicative form of optimize.
- optometer — any of various instruments for measuring the refractive error of an eye.
- optometry — the practice or profession of examining the eyes, by means of suitable instruments or appliances, for defects in vision and eye disorders in order to prescribe corrective lenses or other appropriate treatment.
- optophone — an electronic device that scans ordinary printed characters and produces combinations of sounds, enabling a blind reader to recognize the characters.
- optronics — Optoelectronics.
- opulently — In an opulent manner.
- opuscules — Plural form of opuscule.
- opusculum — opuscule.