micropyrometer

noun

mi·​cro·​pyrometer

¦mī(ˌ)krō+

: an instrument used for the optical determination of the temperature or emissivity of microscopic glowing bodies and having a minute glow lamp mounted in the eyepiece of a microscope so that the image of the filament is superimposed upon that of the observed glowing particle

Word History

Etymology

micr- + pyrometer

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