Bible Dictionaries
Sympiesometer

Webster's Dictionary

(n.) A sensitive kind of barometer, in which the pressure of the atmosphere, acting upon a liquid, as oil, in the lower portion of the instrument, compresses an elastic gas in the upper part.

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