Dictionary entry

Cnida

Webster's Dictionary 1913

‖Cni″da (nī″dȧ), n.; pl.Cnidæ (nī″dē). [NL., fr. Gr. κνίδη nettle, sea nettle.] (Zoöl.) One of the peculiar stinging cells found in Cœlenterata; a nematocyst; a lasso cell.