metanephros

(redirected from metanephra)
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met·a·neph·ros

 (mĕt′ə-nĕf′rŏs′)
n.
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.

[meta- + Greek nephros, kidney.]

met′a·neph′ric (-rĭk) adj.

metanephros

(ˌmɛtəˈnɛfrɒs)
n, pl -roi (-rɔɪ)
(Zoology) the last-formed posterior part of the embryonic kidney in reptiles, birds, and mammals, which remains functional in the adult. See also pronephros, mesonephros
[C19: New Latin, from meta- + Greek nephros kidney]

met•a•neph•ros

(ˌmɛt əˈnɛf rɒs)

n., pl. -roi (-roi).
an embryonic excretory organ of reptiles, birds, and mammals, which develops into the functional kidney.
[1875–80; meta- + Greek nephrós kidney]
met`a•neph′ric, adj.