Thermal effusivity

Ability of a material to exchange thermal energy with surroundings

In thermodynamics, a material's thermal effusivity, also known as thermal responsivity, is a measure of its ability to exchange thermal energy with its surroundings. It is defined as the square root of the product of the material's thermal conductivity and its volumetric heat capacity or as the ratio of thermal conductivity to the square root of thermal diffusivity.

This keyword could refer to multiple things. Here are some suggestions: