cheliceran. 前肢之螯學術名詞螫肢：海洋地質學、地質學鋏角：動物學螯角：動物學顎角〔蜘蛛類〕：海洋地質學英文釋義either of the first pair of fang-like appendages near the mouth of an arachnid; often modified for grasping and piercing