Dictionary

pronephros

noun pro·neph·ros \(ˌ)prō-ˈne-frəs, -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
pro·neph·ric \-frik\ adjective
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Origin of PRONEPHROS

New Latin, from Greek pro- + nephros kidney — more at nephritis
First Known Use: 1881
Medical Dictionary

pronephros

noun pro·neph·ros \(ˈ)prō-ˈnef-rəs, -ˌräs\
plural pro·neph·roi \-ˌri\

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

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