/ Dictionary / Index I impacted: Meaning and Definition of Find definitions for: im•pact•ed Pronunciation: (im-pak'tid), [key] — adj. tightly or immovably wedged in. noting a tooth so confined in its socket as to be incapable of normal eruption. driven together; tightly packed. densely populated or crowded; overcrowded: an impacted school district. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: impacted (Thesaurus) impact crater impacter Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language