/ Dictionary / Index S sartorius: Meaning and Definition of Find definitions for: sar•to•ri•us Pronunciation: (sär-tôr'ē-us, -tōr'-), [key] — pl. -to•ri•i a long, flat, narrow muscle extending obliquely from the front of the hip to the inner side of the tibia, assisting in bending the hip or knee joint and in rotating the thigh outward: the longest muscle in humans. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sartorius (Thesaurus) sartorial Sartor Resartus* Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language