/ Dictionary / Index T thermolabile: Meaning and Definition of Find definitions for: ther•mo•la•bile Pronunciation: (thûr"mō-lā'bil, -bīl), [key] — adj. Biochem. subject to destruction or loss of characteristic properties by the action of moderate heat, as certain toxins and enzymes (opposed to thermostable). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thermolabile (Thesaurus) thermography thermoluminescence Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language