/ Dictionary / Index H helianthine B: Meaning and Definition of Find definitions for: he•li•an•thine B Pronunciation: (hē"lē-an'thin, -thēn), [key] — Chem. Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heliacal helianthus Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language