/ Dictionary / Index H hydranth: Meaning and Definition of Find definitions for: hy•dranth Pronunciation: (hī'drunth), [key] — n. Zool. the terminal part of a hydroid polyp that bears the mouth and tentacles and contains the stomach region. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrant hydrarch Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language