/ Dictionary / Index H hypothermia: Meaning and Definition of Find definitions for: hy•po•ther•mi•a Pronunciation: (hī"pu-thûr'mē-u), [key] — n. subnormal body temperature. the artificial reduction of body temperature to slow metabolic processes, as for facilitating heart surgery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypothermia (Thesaurus) hypothermal hypothesis Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language