WordReference Random House Unabridged Dictionary of American English © 2026
coeffi′cient of expan′sion, [Physics.]
  1. Physicsthe 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. 
  • 1870–75

Collins Concise English Dictionary © HarperCollins Publishers::
coefficient of expansion n
  1. the amount of expansion (or contraction) per unit length of a material resulting from one degree change in temperatureAlso called: expansivity
'coefficient of expansion' also found in these entries (note: many are not synonyms or translations):
expansivity - Invar - Platinite

Forum discussions with the word(s) "coefficient of expansion" in the title:


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