单词 cuspidal 释义 cuspidal, a.|kspdl|[f. L. cuspid-em + -al1.]†1. Belonging to the apex (of a cone). Obs.1647H. More Song of Soul Notes 160/1 The cuspidall particles of the Cone.2. Geom. Having, relating to, or of the nature of, a cusp: see cusp 4.1874...