expansivity
noun /ˌɪkspænˈsɪvəti/, /ˌekspænˈsɪvəti/
/ˌɪkspænˈsɪvəti/, /ˌekspænˈsɪvəti/
[uncountable, countable] (physics- the amount by which a material gets larger or smaller if the temperature changes by one degree
Topics Physics and chemistryc2膨胀率