pyrometer
n. உயர்வெப்பமானி.
Py*rom"e*ter, n. Etym: [Pyro- + -meter: cf. F. pyromètre.] 1. (Physics) Defn: An instrument used for measuring the expansion of solid bodies by heat. 2. (Physics) Defn: An instrument for measuring degrees of heat above those indicated by the mercurial thermometer. Note: It is usually constructed so as to register the change which the heat to be measured produces in the length of some expansible substance, as a metallic rod, or in the intensity of a thermo- electric current.