— exothermically, exothermally , adv. — exothermicity /ek'soh theuhr mis"i tee/ , n.
/ek'soh therr"mik/ , adj. Chem.
noting or pertaining to a chemical change that is accompanied by a liberation of heat (opposed to endothermic ).
Also, exothermal .
[ 1880-85; EXO- + THERMIC ]