/ Dictionary / Index C cnidocil: Meaning and Definition of Find definitions for: cni•do•cil Pronunciation: (nī'du-sil), [key] — n. Zool. a hairlike sensory process projecting from the surface of a cnidoblast, believed to trigger the discharge of the nematocyst. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cnidoblast cnidocyst Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language