[open-minded] {adj.} Having no dogmatic or biased views on matters of […]

[openhanded] {adj.} Generous; liberal. * /Although not wealthy himself, Bob was […]

[opinion] See: [MATTER OP OPINION].

[opposite number] {n. phr.} A person occupying the same position as […]

[opposite sex] {n. phr.} The sex different from the one being […]

[optional origin] {n.} Stipulation in international commodities contract whereby the seller […]

[or other] {adv.} - Used to emphasize indefinite words or phrases […]

[or so] {adv.} About; or a little more. * /Mr. Brown […]

[orbit] See: [GO INTO ORBIT].

[order] See: [APPLE-PIE-ORDER], [CALL TO ORDER], [IN ORDER], [IN ORDER TO], […]