/ Dictionary / Index S superimposed: Meaning and Definition of Find definitions for: su•per•im•posed Pronunciation: (s"pur-im-pōzd'), [key] — adj. Geol. (of a stream or drainage system) having a course not adjusted to the structure of the rocks presently undergoing erosion but determined rather by a prior erosion cycle or by formerly overlying rocks or sediments. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: superimposed (Thesaurus) superimpose superincumbent Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language