/ Dictionary / Index I installation: Meaning and Definition of Find definitions for: in•stal•la•tion Pronunciation: (in"stu-lā'shun), [key] — n. something installed, as machinery or apparatus placed in position or connected for use. the act of installing. the fact of being installed. any more or less permanent post, camp, station, base, or the like, for the support or carrying on of military activities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: installation (Thesaurus) install installment 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