/ Dictionary / Index H hamamelidaceous: Meaning and Definition of Find definitions for: ham•a•mel•i•da•ceous Pronunciation: (ham"u-mel"i-dā'shus, -mē"-, li-), [key] — adj. belonging to the Hamamelidaceae, the witch hazel family of plants. Cf. witch hazel family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hamamatsu Haman Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language