■ noun Chemistry a law stating that the rates of diffusion and effusion of a gas are inversely proportional to the square root of its density.
Origin
C19: named after the Scottish chemist Thomas Graham .
■ noun Chemistry a law stating that the rates of diffusion and effusion of a gas are inversely proportional to the square root of its density.
Origin
C19: named after the Scottish chemist Thomas Graham .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004