metanephros
[met-uh-nef-ros]
- one of the three embryonic excretory organs of higher vertebrates, becoming the permanent and functional kidney.
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Compare mesonephros, pronephros.
Origin of metanephros
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for metanephros
Historical Examples
The differentiation of a posterior section of the mesonephros into a special gland foreshadowing the metanephros of the Amniota.
The Works of Francis Maitland Balfour, Volume III (of 4)Francis Maitland Balfour
The ureter which carries off the secretion of the kidney proper or metanephros.
The Works of Francis Maitland Balfour, Volume III (of 4)Francis Maitland Balfour
The mode of development of the metanephros has as yet only been satisfactorily elucidated in the Chick (Sedgwick, No. 549).
The Works of Francis Maitland Balfour, Volume III (of 4)Francis Maitland Balfour
metanephros
- 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
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metanephros
(mĕt′ə-nĕf′rəs, -rŏs′)- 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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The American Heritage® Stedman's Medical Dictionary
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