pronephros

noun
pro·​neph·​ros | \ (ˌ)prō-ˈne-frəs How to pronounce pronephros (audio) , -ˌfräs \

Definition of pronephros

: either member of the first and most anterior pair of the three successive paired vertebrate renal organs that functions in the adults of amphioxus and some lampreys, functions temporarily in larval fishes and amphibians, and is present but nonfunctional in embryos of reptiles, birds, and mammals — compare mesonephros, metanephros

Other Words from pronephros

pronephric \ (ˌ)prō-​ˈne-​frik How to pronounce pronephros (audio) \ adjective

First Known Use of pronephros

1877, in the meaning defined above

History and Etymology for pronephros

New Latin, from Greek pro- + nephros kidney — more at nephritis

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The first known use of pronephros was in 1877

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Cite this Entry

“Pronephros.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pronephros. Accessed 24 Jan. 2021.

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More Definitions for pronephros

pronephros

noun
pro·​neph·​ros | \ (ˈ)prō-ˈnef-rəs, -ˌräs How to pronounce pronephros (audio) \
plural pronephroi\ -​ˌrȯi How to pronounce pronephros (audio) \

Medical Definition of pronephros

: either member of the first and most anterior pair of the three paired vertebrate renal organs that functions in the adults of amphioxus and some lampreys, functions temporarily in larval fishes and amphibians, and is present but nonfunctional in embryos of reptiles, birds, and mammals — compare mesonephros, metanephros

More from Merriam-Webster on pronephros

Britannica.com: Encyclopedia article about pronephros

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