coefficient of expansion

noun Physics.

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

Origin of coefficient of expansion

First recorded in 1870–75

Words nearby coefficient of expansion

coeducation, coeducational, coefficient, coefficient of correlation, coefficient of elasticity, coefficient of expansion, coefficient of friction, coefficient of performance, coefficient of restitution, coefficient of variation, coefficient of viscosity

British Dictionary definitions for coefficient of expansion

coefficient of expansion

noun

the amount of expansion (or contraction) per unit length of a material resulting from one degree change in temperature Also called: expansivity