/ Dictionary / Index E eruptive: Meaning and Definition of Find definitions for: e•rup•tive Pronunciation: (i-rup'tiv), [key] — adj. bursting forth, or tending to burst forth. pertaining to or of the nature of an eruption. noting a rock formed by the eruption of molten material. causing or accompanied by an eruption or rash. —n. an eruptive rock. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: eruptive (Thesaurus) eruption eruv Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language