Endothermic refers to an endothermic reaction by which heat is absorbed rather than evolved. Also can be defined as a positive change in enthalpy.
En`do*ther"mic (?), a. [Pref. endo- + thermic.] (Chem.)
Designating, or pert. to, a reaction which occurs with absorption of heat; formed by such a reaction; as, an endothermic substance; -- opposed to exothermic.
© Webster 1913
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