/ Dictionary / Index H hydrotropism: Meaning and Definition of Find definitions for: hy•drot•ro•pism Pronunciation: (hī-dro'tru-piz"um), [key] — n. Biol. oriented growth in response to water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrotropic hydrous 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