/ Dictionary / Index M macrophyte: Meaning and Definition of Find definitions for: mac•ro•phyte Pronunciation: (mak'ru-fīt"), [key] — n. Bot. a plant, esp. a marine plant, large enough to be visible to the naked eye. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macrophysics macroplankton 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