/ Thesaurus / E Synonyms of endothermal Find synonyms for: Adjective1. endothermic (vs. exothermic), endothermal, heat-absorbing, decalescent, endoergic#1, energy-absorbingusage: (of a chemical reaction or compound) occurring or formed with absorption of heatWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language