/ Dictionary / Index M monophyllous: Meaning and Definition of Find definitions for: mon•o•phyl•lous Pronunciation: (mon"u-fil'us), [key] — adj. Bot. consisting of one leaf, as a calyx. having only one leaf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monophyletic Monophysite Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language