##  [Mean Time Between Failures](/mean-time-between-failures) 

  ##  [Mean Time Between Failures](https://engineering.quantumdictionary.io/mean-time-between-failures-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

For a repairable system or device, the arithmetic mean of the operating time intervals between consecutive failures measured over an observation period; used as a descriptive reliability metric for assemblies or populations, not as a deterministic lifetime guarantee for an individual unit.