'Cnidae' definitions:
Definition of 'Cnidae'
From: GCIDE
- Cnida \Cni"da\ (n[imac]"d[.a]), n.; pl. Cnid[ae] (n[imac]"d[=e]). [NL., fr. Gr. kni`dh nettle, sea nettle.] (Zool.) One of the peculiar stinging cells found in C[oe]lenterata; a nematocyst; a lasso cell. [1913 Webster]