[ met-uh-nef-ros ]
/ ˌmɛt əˈnɛf rɒs /
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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.
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Origin of metanephros

1875–80; <New Latin <Greek meta-meta- + nephrós kidney

OTHER WORDS FROM metanephros

met·a·neph·ric, adjective
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How to use metanephros in a sentence

British Dictionary definitions for metanephros

/ (ˌmɛtəˈnɛfrɒs) /

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

Medical definitions for metanephros

[ 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.

Other words from metanephros

met′a•nephric (-rĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.