Definition of calorimeter noun from the Oxford Advanced Learner's Dictionary

 

calorimeter

 noun
noun
BrE BrE//ˌkæləˈrɪmɪtə(r)//
 
; NAmE NAmE//ˌkæləˈrɪmɪtər//
 
(specialist)
 
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a device which measures the amount of heat in a chemical reaction Word Origin late 18th cent.: from Latin calor ‘heat’ + -meter (see meter).
See the Oxford Advanced American Dictionary entry: calorimeter