Bible Dictionaries
Pyroscope

Webster's Dictionary

(n.) An instrument for measuring the intensity of heat radiating from a fire, or the cooling influence of bodies. It is a differential thermometer, having one bulb coated with gold or silver leaf.

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