thermobarometer

American  

[thur-moh-buh-rom-i-ter] / ˌθɜr moʊ bəˈrɒm ɪ tər /

noun

1. Also called hypsometer.  an instrument for measuring atmospheric pressure, and sometimes altitude, from its effect upon the boiling point of a liquid.

2. a form of barometer so constructed that it may also be used as a thermometer.

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thermobarometer British  

/ ˌθɜːməʊbəˈrɒmɪtə /

noun

1. an apparatus that provides an accurate measurement of pressure by observation of the change in the boiling point of a fluid

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Etymology

Origin of thermobarometer

First recorded in 1860–65; thermo- + barometer