Endothermic
Pronunciation : En`do*ther"mic
Part of Speech : a.
Definition : Defn: Designating, or pert. to, a reaction which occurs with absorption of heat; formed by such a reaction; as, an endothermic substance; -- opposed to exothermic.
[Pref. endo-+ thermic.] (Chem.)
Source : Webster's Unabridged Dictionary, 1913