/ Dictionary / Index I isanthous: Meaning and Definition of Find definitions for: is•an•thous Pronunciation: (ī-san'thus), [key] — adj. Bot. having regular flowers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isanomal Isar Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language