/ Dictionary / Index M myoglobin: Meaning and Definition of Find definitions for: my•o•glo•bin Pronunciation: (mī"u-glō'bin, mī'u-glō"-), [key] — n. Biochem. hemoglobin of muscle, weighing less and carrying more oxygen and less carbon monoxide than blood hemoglobin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: myoglobin (Thesaurus) myogenic myogram Related Content Daily Word Quiz: braggart Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language