‖n. pl. [ NL., fr. Gr. &unr_; (see Penta-) + &unr_;, &unr_;, man, male. ] (Bot.) A Linnæan class of plants having five separate stamens. [ 1913 Webster ]
{ } a. (Bot.) Of or pertaining to the class Pentadria; having five stamens. [ 1913 Webster ]