cup barometer

noun

: a barometer consisting of a graduated glass tube about 34 inches long filled with mercury and inverted in a cup containing mercury, the column of mercury in the tube descending until balanced by the pressure of the atmosphere, its rise and fall being a measure of change of atmospheric pressure

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Dictionary Entries Near cup barometer

Cite this Entry

“Cup barometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cup%20barometer. Accessed 21 Jul. 2024.

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