Căl/o-rĭm'e-ter, n.

n. [Fr. calorimètre, N. Lat. calorimetrum, from Lat. calor, heat, and Gr. μέτρον, measure.] An apparatus for measuring the amount of heat contained in bodies. It was invented by Lavoisier and Laplace, and usually operates by the melting of ice around the body to be tested. Nichol.