Breadcrumb Home > Dictionary > Index L latissimus dorsi: Meaning and Definition of Find definitions for: la•tis•si•mus dor•si Pronunciation: (lu-tis'u-mus dôr'sī), [key] — pl. la•tis•si•mi dor•si a broad, flat muscle on each side of the midback, the action of which draws the arm backward and downward and rotates the front of the arm toward the body. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. latish Latitia TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: fatuous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language