| | |
| OP | | Abbr. Opus.
- Cit. Abbr. In the work already quoted. [latin opere citato]
- art n. Colloq. = *optical art. [abbreviation]
- n. Colloq. Operation. [abbreviation]
- see *ob-. | |
| | |
| OR | | suffix forming nouns denoting esp. An agent (actor; escalator) or condition (error; horror). [latin]
- conj. - introducing an alternative (white or black; take it or leave it; whether or not).
- introducing an alternative name (the lapwing or peewit).
- introducing an afterthought (came in laughing – or was it crying?).
- = or else 1 (run or you'll be late). or else 1 otherwise (run, or else you will be late).
- colloq. Expressing a warning or threat (be good or else). [old english]
- n. Heraldry gold. [latin aurum gold] | |
| | |
| OS | | abbr. - old style.
- ordinary seaman.
- ordnance survey.
- outsize.
- symb. Osmium. | |
| | |
| OT | | abbr. Old testament. | |
| | |
| OU | | abbr. - open university.
- oxford university. | |
| | |
| OW | | int. Expressing sudden pain. [natural exclamation] | |
| | |
| OX | | n. (pl. Oxen) 1 large usu. Horned ruminant used for draught, milk, and meat.
- castrated male of a domesticated species of cattle. [old english] | |
| | |
| OZ | | abbr. Ounce(s). [italian onza ounce] | |
| | |
| OAF | | n. (pl. -s) 1 awkward lout.
- stupid person. oafish adj. Oafishly adv. Oafishness n. [old norse: related to *elf] | |
| | |
| OAK | | n. - acorn-bearing tree with lobed leaves.
- its durable wood.
- (attrib.) Of oak.
- (the oaks) (treated as sing.) Annual race at epsom for fillies. [old english] | |
| | |
| | | | |