##  [Neonatal Mortality Rate](/neonatal-mortality-rate) 

  ##  [Neonatal Mortality Rate](https://health.quantumdictionary.io/neonatal-mortality-rate-0) 

  

 [![Health & Life Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Health%20%26%20Life%20Sciences.png.webp?itok=yyyaiQOY)](/topic-specific-dictionaries/health-life-sciences)



**Health & Life Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The proportion of liveborn offspring in a defined population that die within a specified neonatal period (species- and program-defined), calculated as deaths within that period divided by the number born alive during the same denominator period, expressed as a proportion, percentage or per‑unit population.