Definition of expansivity noun from the Oxford Advanced Learner's Dictionary

 

expansivity

 noun
noun
BrE BrE//ˌɪkspænˈsɪvɪti//
 
; NAmE NAmE//ˌɪkspænˈsɪvɪti//
 
; BrE BrE//ˌekspænˈsɪvɪti//
 
; NAmE NAmE//ˌekspænˈsɪvɪti//
 
[uncountable, countable](physics) Materials and properties
 
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the amount by which a material gets larger or smaller if the temperature changes by one degree See related entries: Materials and properties
See the Oxford Advanced American Dictionary entry: expansivity