/ Dictionary / Index E endothermic: Meaning and Definition of Find definitions for: en•do•ther•mic Pronunciation: (en"dō-thûr'mik), [key] — adj. noting or pertaining to a chemical change that is accompanied by an absorption of heat (opposed to exothermic). warm-blooded. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: endothermic (Thesaurus) endotherm endotoxin Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language