Bible Dictionaries
Pyrometer

Webster's Dictionary

(1):

(n.) An instrument used for measuring the expansion of solid bodies by heat.

(2):

(n.) An instrument for measuring degrees of heat above those indicated by the mercurial thermometer.

Bibliography Information
Webster, Noah. Entry for 'Pyrometer'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/pyrometer.html. 1828.