/ Dictionary / Index M meiosis: Meaning and Definition of Find definitions for: mei•o•sis Pronunciation: (mī-ō'sis), [key] — n. part of the process of gamete formation, consisting of chromosome conjugation and two cell divisions, in the course of which the diploid chromosome number becomes reduced to the haploid. Cf. belittlement. expressive understatement, esp. litotes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: meiosis (Thesaurus) meionite Meir Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language