Rap*to"ri*al (-r&ibreve;*al), a. (Zoöl.) (a) Rapacious; living upon prey; -- said especially of certain birds. (b) Adapted for seizing prey; -- said of the legs, claws, etc., of insects, birds, and other animals. (c) Of or pertaining to the Raptores. See Illust. (f) of Aves.