| OPAHS | • opahs n. Plural of opah. • OPAH n. a large sea-fish with laterally flattened body, aka sunfish, kingfish. |
| OPALS | • opals n. Plural of opal. • Opals prop.n. (Chiefly Australia) The women’s national basketball representative team of Australia. • OPAL n. an amorphous variety of silica. |
| OPENS | • opens n. Plural of open. • opens v. Third-person singular simple present indicative form of open. • OPEN v. to cause to become open. |
| OPEPE | • opepe n. Synonym of bilinga (tropical hardwood). • OPEPE n. (Yoruba) a West African tree yielding a hard yellowish wood used as a substitute for teak. |
| OPERA | • opera n. (Music) A theatrical work, combining drama, music, song and sometimes dance. • opera n. (Music) The score for such a work. • opera n. A building designed for the performance of such works; an opera house. |
| OPINE | • opine v. (Intransitive, transitive) To have or express an opinion; to state as an opinion; to suppose, consider (that). • opine v. (Intransitive) To give one’s formal opinion (on or upon something). • opine n. (Biochemistry) Any of a class of organic compounds, derived from amino acids, found in some plant tumours. |
| OPING | • oping v. Present participle of ope. • OPE v. to open. |
| OPIUM | • opium n. (Uncountable) A yellow-brown, addictive narcotic drug obtained from the dried juice of unripe pods of… • opium n. (By extension, countable) Anything that numbs or stupefies. • OPIUM n. an addictive narcotic. |
| OPPOS | • oppos n. Plural of oppo. • OPPO n. an opposite number or an opponent. |
| OPSIN | • opsin n. (Biochemistry) Any of a group of light-sensitive proteins in the retina. • OPSIN n. a protein which forms part of the visual pigment rhodopsin. |
| OPTED | • opted v. Simple past tense and past participle of opt. • OPT v. to decide or choose. |
| OPTER | • opter n. One who opts, or makes a choice. • OPTER n. someone who opts. |
| OPTIC | • optic adj. (Relational) Of, or relating to the eye or to vision. • optic adj. (Optics, relational) Of, or relating to optics or optical instruments. • optic n. (Archaic, humorous) An eye. |