/ Dictionary / Index H hyacinthine: Meaning and Definition of Find definitions for: hy•a•cin•thine Pronunciation: (hī"u-sin'thin, -thīn), [key] — adj. of or like the hyacinth. adorned with hyacinths. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyacinthin Hyacinthus Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language