/ Dictionary / Index M macrodome: Meaning and Definition of Find definitions for: mac•ro•dome Pronunciation: (mak'ru-dōm"), [key] — n. Crystall. a dome the faces of which are parallel to the greater lateral axis. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macrocyte macrodontia Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language