Definition of expansivity in English:

expansivity

noun

Physics
  • The amount a material expands or contracts per unit length due to a one-degree change in temperature.

    • ‘They provide resistance to frictional wear, corrosion resistance, nonmagnetic characteristics and, in some alloys, low thermal expansivity at ambient temperatures.’
    • ‘The local compression created by the electric field can be related to the expansivity modulus, K, by this expression.’
    • ‘The comparatively high thermal expansivity of aluminium leads to looseness unless the steel has a similar coefficient of expansion.’

Pronunciation

expansivity

/ɛkspanˈsɪvɪti/