/ Dictionary / Index U upthrow: Meaning and Definition of Find definitions for: up•throw Pronunciation: (n.up'thrō"v.up&sylpthrō'), [key] — n., v., -threw, -thrown, -throw•ing. —n. an upheaval, as of the earth's surface. an upward displacement of rock on one side of a fault. —v.t. to throw or cast up or upward. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: upthrow (Thesaurus) up-tempo upthrust 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