/ Dictionary / Index T thermotaxis: Meaning and Definition of Find definitions for: ther•mo•tax•is Pronunciation: (thûr"mu-tak'sis), [key] — n. movement of an organism toward or away from a source of heat. the regulation of the bodily temperature. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thermostat thermotherapy Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language