/ Dictionary / Index M manubrium: Meaning and Definition of Find definitions for: ma•nu•bri•um Pronunciation: (mu-n'brē-um, -ny'-), [key] — pl. -bri•a -bri•ums. a segment, bone, cell, etc., resembling a handle. Also called the uppermost of the three portions of the sternum. Cf.gladiolus(def. 2),xiphisternum. the long process of the malleus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: manubrium (Thesaurus) manubial column manucode Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language