| Pyroscope | n. [ Pyro- + -scope: cf. F. pyroscope. ] (Physics) An instrument for measuring the intensity of heat radiating from a fire, or the cooling influence of bodies. It is a differential thermometer, having one bulb coated with gold or silver leaf. [ R. ] [ 1913 Webster ] |
| optical pyrometer | (n) a pyrometer that uses the color of the light emitted by a hot object, Syn. pyroscope |