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metanephroi

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met⋅a⋅neph⋅ros

  [met-uh-nef-ros]
Use metanephroi in a Sentence
–noun, plural -roi  [-roi] . Embryology.
one of the three embryonic excretory organs of higher vertebrates, becoming the permanent and functional kidney.

Origin:
1875–80; < NL < Gk meta- meta- + nephrós kidney

Related forms:
met⋅a⋅neph⋅ric, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: meta·neph·ros
Pronunciation: -'nef-r&s, -"räs
Function: noun
Inflected Form: plural meta·neph·roi /-"roi/
: either member of the final and most caudal pair of the three successive pairs of vertebrate renal organs that functions as a permanent adult kidney in reptiles, birds,and mammals but is not present at all in lower forms —compare MESONEPHROS, PRONEPHROS
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

metanephros met·a·neph·ros (mět'ə-něf'rəs, -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.

met'a·neph'ric (-rĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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