pyrometer

plural pyrometers

1. A thermometer designed to measure high temperatures.

   1 more example

   I was working with full regulator and about 40 per cent cut-off and we were going quite hard when André called my attention to the pyrometer. This was showing a comparatively low temperature (about 250 deg C.) which meant that unless I eased up, the boiler might start to prime. So we eased her a shade, let the water come down to a third of a glass and then we were away again in perfect order with the pyrometer showing about 375 deg C.

   1961 March, ""Balmore"", “Driving and firing modern French steam locomotives”, in Trains Illustrated, page 147

   Antonyms: cryometer

2. An instrument for measuring the thermal expansion of solids.