/ Dictionary / Index S supersaur: Meaning and Definition of Find definitions for: su•per•saur Pronunciation: (s'pur-sôr"), [key] a huge sauropod dinosaur of the genus Supersaurus, of W North America, that reached a length of about 130 ft. (40 m). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. supersaturate supersaver 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