/ Dictionary / Index M mammillary: Meaning and Definition of Find definitions for: mam•mil•lar•y Pronunciation: (mam'u-ler"ē), [key] — adj. of, pertaining to, or resembling a mammilla. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mammillaria mammillate Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language