- a device for measuring temperature by observing the change in either pressure or volume of an enclosed gas.
Origin of gas thermometer
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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