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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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for coefficient of expansion

coefficient of expansion

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