"apparatus for measuring heat given off by a body," 1794, from Latin calor "heat" (from PIE root *kele- (1) "warm") + -meter. A hybrid word. Related: Calorimetric; calorimetry.
calmness
calomel
Calor
caloric
calorie
calorimeter
calque
calumet
calumniate
calumniation
calumniator