theropodn.獸腳亞目食肉恐龍(前肢小, 主要用後肢行走)a. 獸腳亞目的學術名詞獸腳類：生命科學英文釋義any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs