##  [Phase Transition](/phase-transition) 

  ##  [Phase Transition](https://natural.quantumdictionary.io/phase-transition-0) 

  

 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/topic-specific-dictionaries/natural-formal-sciences)



**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A qualitative, often nonanalytic change in the macroscopic state of a system produced when a control parameter crosses a threshold in the appropriate limit of system size or coupling.