/ Dictionary / Index M menses: Meaning and Definition of Find definitions for: men•ses Pronunciation: (men'sēz), [key] — n. (used with a sing. or pl. v.) Physiol. the periodic flow of blood and mucosal tissue from the uterus; menstrual flow. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: menses (Thesaurus) menservants Menshevik Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language