/ Dictionary / Index M maximal ideal: Meaning and Definition of Find definitions for: max'imal ide'al Pronunciation: [key] an ideal in a ring that is not included in any other ideal except the ring itself. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. maximal maximalist 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