metanephros: Meaning and Definition of

met•a•neph•ros

Pronunciation: (met"u-nef'ros), [key]
— pl. -roi
  1. one of the three embryonic excretory organs of higher vertebrates, becoming the permanent and functional kidney. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.