noun, plural met·a·neph·roi [met-uh-nef-roi] /ˌmɛt əˈnɛf rɔɪ/. Embryology.

one of the three embryonic excretory organs of higher vertebrates, becoming the permanent and functional kidney.

Origin of metanephros

1875–80; < New Latin < Greek meta- meta- + nephrós kidney
Related formsmet·a·neph·ric, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of metanephric

British Dictionary definitions for metanephric


noun plural -roi (-rɔɪ)

the last-formed posterior part of the embryonic kidney in reptiles, birds, and mammals, which remains functional in the adultSee also pronephros, mesonephros

Word Origin for metanephros

C19: New Latin, from meta- + Greek nephros kidney
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

metanephric in Medicine


[mĕt′ə-nĕfrəs, -rŏs′]

n. pl. met•a•neph•roi (-roi′)

The third and final excretory organ that develops in a vertebrate embryo. In birds, reptiles, and mammals it replaces the mesonephros as the functional excretory organ and develops into the adult kidney.
Related formsmet′a•nephric (-rĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.