Gay-Lussac's law

noun Thermodynamics.

the principle that, for relatively low pressures, the density of an ideal gas at constant pressure varies inversely with the absolute temperature of the gas.
Compare Boyle's law.

Origin of Gay-Lussac's law

named after J. L. Gay-Lussac
Also called Charles' law. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for gay-lussac's law

Gay-Lussac's law

/ (ˈɡeɪˈluːsæks) /


the principle that gases react together in volumes (measured at the same temperature and pressure) that bear a simple ratio to each other and to the gaseous products
another name for Charles' law
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