/ Dictionary / Index M metestrus: Meaning and Definition of Find definitions for: met•es•trus Pronunciation: (met-es'trus), [key] — n. the luteal phase of the reproductive cycle in mammalian females, occurring after ovulation and characterized by development of the corpus luteum, increased progesterone secretion, and decreased estrogen secretion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metes and bounds meth Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language