/ Dictionary / Index K kainic acid: Meaning and Definition of Find definitions for: kai'nic ac'id Pronunciation: (kī'nik), [key] — Pharm. Pharm. an analogue of glutamate, CHNO, derived from the red alga Digenia simplex, used experimentally to stimulate certain neurons in the brain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Kaingang kainite Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language