/ Dictionary / Index I irrigation: Meaning and Definition of Find definitions for: ir•ri•ga•tion Pronunciation: (ir"i-gā'shun), [key] — n. the artificial application of water to land to assist in the production of crops. the flushing or washing out of anything with water or other liquid. the state of being irrigated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: irrigation (Thesaurus) irrigate irrigative Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language