/ Dictionary / Index M meionite: Meaning and Definition of Find definitions for: mei•o•nite Pronunciation: (mī'u-nīt"), [key] — n. Mineral. a member of the scapolite group, rich in calcium and containing no sodium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. meiny meiosis Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language