Charles's law

[ chahrl-ziz law ]

noun

, Thermodynamics.

1. Gay-Lussac's law.

Charles's law

/ chärl′zĭz /

1. The principle that the volume of a given mass of an ideal gas is proportional to its temperature as long as its pressure remains constant. Charles's law is a subcase of the ideal gas law .
2. Compare Boyle's law

Word History and Origins

Origin of Charles's law¹

First recorded in 1785–90; named after J. A. C. Charles (1746–1823), French physicist, who stated it