- pyrophotometer
- \\“+\ noun
Etymology: pyr- + photometer: an optical pyrometer in which light from an incandescent body whose temperature is to be measured is passed through ruby glass and the red rays thus isolated are compared with those similarly received from a standard flame — compare pyrometer
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/puy'roh foh tom"i teuhr/, n. Physics.a form of pyrometer that measures temperature by optical or photometric means.[PYRO- + PHOTOMETER]
Useful english dictionary. 2012.