/ Dictionary / Index E expansive: Meaning and Definition of Find definitions for: ex•pan•sive Pronunciation: (ik-span'siv), [key] — adj. having a wide range or extent; comprehensive; extensive: expansive mountain scenery. (of a person's character or speech) effusive, unrestrained, free, or open: Our expansive host welcomed us warmly. tending to expand or capable of expanding. causing expansion: the expansive force of heat. working by expansion, as an engine. marked by an abnormal euphoric state and by delusions of grandeur. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: expansive (Thesaurus) expansion wave expansive bit Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language