> ǁ cnida /ˈknaɪdə/. Zool.
Pl. cnidæ.
Etymology: mod.L., a. Gr. κνίδη nettle.
The nettle cell (urticating, or thread cell) of the Cœlenterata (jelly-fish, hydra, etc.), in which their power of stinging resides: usually called nematocyst. Hence combining form cnido-, ˈcnidoblast Gr. βλαστός germ, the cell in which a nematocyst is developed; ˈcnidocell = cnida; ˈcnidocil L. cilium, cf. cil, the external irritable ciliary process of a cnidoblast; ˈcnidocyst, a nematocyst; cniˈdogenous a., producing or containing nematocysts; ˈcnidophore Gr. -φορος bearing, a process bearing a ‘battery’ of cn…