a device for measuring temperature by observing the change in either pressure or volume of an enclosed gas.
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How to use gas thermometer in a sentence
The permanent character of helium might be taken advantage of in its application to the gas thermometer.
British Dictionary definitions for gas thermometer
a device for measuring temperature by observing the pressure of gas at a constant volume or the volume of a gas kept at a constant pressure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012