coefficient of expansion

noun

, Physics.

1. the fractional change in length, area, or volume per unit change in temperature of a solid, liquid, or gas at a given constant pressure.

coefficient of expansion

noun

1. the amount of expansion (or contraction) per unit length of a material resulting from one degree change in temperature Also calledexpansivity

Word History and Origins

Origin of coefficient of expansion¹

First recorded in 1870–75