##  [Boltzmann Entropy](/boltzmann-entropy) 

  ##  [Boltzmann Entropy](https://natural.quantumdictionary.io/boltzmann-entropy-0) 

  

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**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A thermodynamic entropy defined for a macrostate as S = k_B ln W where W is the number of microstates compatible with the macrostate; more generally the statistical entropy for a probability distribution {p_i} is S = −k_B ∑ p_i ln p_i.