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endothermic vs. exothermic

endothermic vs. exothermic: What’s the difference?

Endothermic and exothermic are used in chemistry to describe chemical reactions—specifically, to indicate whether heat is absorbed or released (-thermic refers to heat). Endothermic reactions are those in which heat is absorbed (endo- means “inâ€). Exothermic is the opposite—exothermic reactions are those in which heat is given off (exo- means “outâ€).

endothermic

adjective

  1. Chemistry. noting or pertaining to a chemical change that is accompanied by an absorption of heat ( exothermic ).
  2. Zoology. warm-blooded.

exothermic

adjective

Chemistry.
  1. noting or pertaining to a chemical change that is accompanied by a liberation of heat ( endothermic ).