Definition of calorimeter in English:
 calorimeter
noun ˌkaləˈrɪmɪtəˌkæləˈrɪmɪdər
An apparatus for measuring the amount of heat involved in a chemical reaction or other process.
 Example sentencesExamples
-  It functions as what physicists call a calorimeter, measuring the total energy of the deposited gamma rays.
 -  The cells were stabilized for 4 hours at 25 degrees celsius inside the calorimeter before heating up to the final temperature at a heating rate of 0.5 degrees celsius per minute.
 -  This calorimeter, which contains 400 kilograms of liquid krypton, detected the photon pairs.
 -  The reaction takes place in an apparatus called a calorimeter, which is specially designed to completely insulate the reaction system so no heat is gained from or lost to the surrounding environment.
 -  They used the ice calorimeter to measure the heat given off by a guinea pig as it breathed oxygen, relating this heat to that of a chemical reaction occurring inside the animal.
 
Origin
  
Late 18th century: from Latin calor 'heat' + -meter.
   Definition of calorimeter in US English:
 calorimeter
nounˌkæləˈrɪmɪdərˌkaləˈrimidər
An apparatus for measuring the amount of heat involved in a chemical reaction or other process.
 Example sentencesExamples
-  The cells were stabilized for 4 hours at 25 degrees celsius inside the calorimeter before heating up to the final temperature at a heating rate of 0.5 degrees celsius per minute.
 -  This calorimeter, which contains 400 kilograms of liquid krypton, detected the photon pairs.
 -  It functions as what physicists call a calorimeter, measuring the total energy of the deposited gamma rays.
 -  The reaction takes place in an apparatus called a calorimeter, which is specially designed to completely insulate the reaction system so no heat is gained from or lost to the surrounding environment.
 -  They used the ice calorimeter to measure the heat given off by a guinea pig as it breathed oxygen, relating this heat to that of a chemical reaction occurring inside the animal.
 
Origin
  
Late 18th century: from Latin calor ‘heat’ + -meter.