/ Dictionary / Index M myriad-leaf: Meaning and Definition of Find definitions for: myr•i•ad-leaf Pronunciation: (mir'ē-ud-lēf"), [key] — pl. -leaves. an aquatic plant, Myriophyllum verticillatum, of the North Temperate Zone, having hairlike, submerged leaves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. myriad myriapod 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