##  [Thermal Diffusivity](/thermal-diffusivity) 

  ##  [Thermal Diffusivity](https://engineering.quantumdictionary.io/thermal-diffusivity-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A material property defined as alpha = k / (rho * c_p), where k is thermal conductivity, rho is density and c_p is specific heat capacity at constant pressure; it governs the speed at which temperature disturbances propagate through a homogeneous material and determines thermal penetration depth and transient response times.