/ Dictionary / Index I irrigative: Meaning and Definition of Find definitions for: ir•ri•ga•tive Pronunciation: (ir'i-gā"tiv), [key] — adj. serving for or pertaining to irrigation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. irrigation irriguous 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