/ Dictionary / Index M macrobiosis: Meaning and Definition of Find definitions for: mac•ro•bi•o•sis Pronunciation: (mak"rō-bī-ō'sis), [key] — n. Med. long life. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macro macrobiotic Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language