• synonyms


noun, plural met·a·neph·roi [met-uh-nef-roi] /ˌmɛt əˈnɛf rɔɪ/. Embryology.
  1. 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
Related formsmet·a·neph·ric, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for metanephric

Historical Examples

  • This mass of mesoblastic cells may be called the metanephric blastema.

    The Works of Francis Maitland Balfour, Volume III (of 4)

    Francis Maitland Balfour

British Dictionary definitions for metanephric


noun plural -roi (-rɔɪ)
  1. the last-formed posterior part of the embryonic kidney in reptiles, birds, and mammals, which remains functional in the adultSee also pronephros, mesonephros
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Word Origin

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′)
  1. 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.
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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.