calorimetry

n. measuring of amounts of heat

Calorimetry is the science of measuring the heat of chemical reactions or physical changes. Calorimetry involves the use of a calorimeter. The word calorimetry is derived from the Latin word calor, meaning heat. Scottish physician and scientist Joseph Black, who was the first to recognize the distinction between heat and temperature, is said to be the founder of calorimetry.
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Cal·o·rim·e·try n. Measurement of the amount of heat evolved or absorbed in a chemical reaction, change of state, or formation of a solution. [more]Calorimetry - Community and Resources

Noun
1. measurement of quantities of heat
(hypernym) measurement, measuring, measure, mensuration

(n.)
Measurement of the quantities of heat in bodies.