##  [Estuary](/estuary) 

  ##  [Estuary](https://earthenviro.quantumdictionary.io/estuary-1) 

  

 [![Earth & Environmental Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Earth%20%26%20Environmental%20Sciences.png.webp?itok=8-8yK_gA)](/topic-specific-dictionaries/natural-formal-sciences/earth-environmental-sciences)

- Natural & Formal Sciences -

**Earth & Environmental Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An Earth and environmental sciences concept defining a process, measurement, or principle used to understand Earth and its systems. It applies within stated assumptions and depends on reliable observation and analysis. It does not ensure correct inference without attention to scale, uncertainty, and validation.



 

 

 

 

 





 

 



 ##  [Estuary](https://natural.quantumdictionary.io/estuary-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 coastal water body where freshwater from one or more rivers mixes with seawater under the influence of tides, producing gradients in salinity, sediment, and flow with distinct ecological and physical zones.