pyrometer

1 of 2

noun

py·​rom·​e·​ter pī-ˈrä-mə-tər How to pronounce pyrometer (audio)
: an instrument for measuring temperatures especially when beyond the range of mercurial thermometers
pyrometric adjective
pyrometrically adverb
pyrometry noun

pyrometric

2 of 2

adjective

py·​ro·​met·​ric ¦pīrə¦me‧trik How to pronounce pyrometric (audio)
variants or less commonly pyrometrical
-‧trə̇kəl
: of or relating to pyrometry
also : determined by a pyrometer : used in the measurement of high temperatures
pyrometrically adverb

Examples of pyrometer in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
This instrument, called a radiation pyrometer, resembles a small telescope and is equipped with rock-salt and quartz lenses that screen out all except infrared radiations. Popular Mechanics Editors, Popular Mechanics, 17 Dec. 2020

Word History

Etymology

Noun

International Scientific Vocabulary

Adjective

International Scientific Vocabulary pyrometry + -ic; probably originally formed as French pyrométrique

First Known Use

Noun

1791, in the meaning defined above

Time Traveler
The first known use of pyrometer was in 1791

Browse Nearby Words

Cite this Entry

“Pyrometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pyrometer. Accessed 27 Jun. 2026.

More from Merriam-Webster on pyrometer

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster