/ Dictionary / Index H homoiothermal: Meaning and Definition of Find definitions for: ho•moi•o•ther•mal Pronunciation: (hō-moi"u-thûr'mul, hō"moi-), [key] — adj. having a body temperature that is relatively constant and mostly independent of the temperature of the environment; warm-blooded (opposed to poikilothermal). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. homoiotherm Homoiousian Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language