A graph showing how much heat is produced by a chemical reaction at different points in time by plotting temperature versus time. ... (09 Oct 1997) ... 
Heat released during a chemical reaction. Uncontrolled exotherm can lead to extreme heat build up and possibly violent explosion.
A chemical reaction which causes heat to be given out
The temperature/time curve of a chemical reaction giving off heat, particularly the polymerization of casting resins. (2) The amount of heat given off. The term has not been standardized with respect to sample size, ambient temperature, degree of mixing, etc
noun a compound that gives off heat during its formation and absorbs heat during its decomposition