/ Dictionary / Index H hydrotaxis: Meaning and Definition of Find definitions for: hy•dro•tax•is Pronunciation: (hī"dru-tak'sis), [key] — n. Biol. oriented movement toward or away from water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrosulfurous hydrotheca Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language