WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / E / exothermic reaction exothermic reaction noun 19 letters Scrabble 34 WWF 37 Definitions noun a chemical reaction accompanied by the evolution of heat Look “exothermic reaction” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →