The vomeronasal organ, an auxiliary olfactory sense organ found in many animals.

(mathematics) Formally, given two partially ordered sets A and B, the order ≤ on the Cartesian product A × B such that (a,b) ≤ (a′,b′) if and only if a < a′ or (a = a′ and b ≤ b′).

plural of alphabetical order

plural of organ donor

(zoology) A collection of sensory cells found in the pedicel of the antennae in the class Insecta.

Third-person singular simple present indicative form of mail-order

simple past tense and past participle of mail-order

(anatomy) An organ used for sexual reproduction.

(law) Abbreviation of United States District Court for the District of Oregon, as used in case citations.

(law) Abbreviation of Oregon, as used in case citations.