pyrometer

UK: /paɪˈrɒmɪtə/ US: (pī rom′i tər)

WordReference Random House Unabridged Dictionary of American English © 2025

py•rom•e•ter  (pī rom′i tər), n. 

1. Physics, Thermodynamics an apparatus for measuring high temperatures that uses the radiation emitted by a hot body as a basis for measurement.

• 1740–50; pyro- + -meter

py•ro•met•ric  (pī′rə me′trik), py′ro•met′ri•cal, adj.  py′ro•met′ri•cal•ly, adv. 
py•rom′e•try, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

pyrometer / paɪˈrɒmɪtə/ noun

1. an instrument for measuring high temperatures, esp by measuring the brightness (optical pyrometer) or total quantity (radiation pyrometer) of the radiation produced by the source. Other types include the resistance thermometer and the thermocouple

pyrometric / ˌpaɪrəʊˈmɛtrɪk/, ˌpyroˈmetrical adjective

ˌpyroˈmetrically adverb

pyˈrometry noun