/ Dictionary / Index S superposition: Meaning and Definition of Find definitions for: su•per•po•si•tion Pronunciation: (s"pur-pu-zish'un), [key] — n. Geol. the order in which sedimentary strata are superposed one above another. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: superposition (Thesaurus) superpose superposition principle Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language