Definition of metanephros in US English:

metanephros

noun

Embryology
  • The most caudal and latest-developing part of the nephrogenic tissue of vertebrate embryos, which becomes the permanent kidney in amniotes.

Origin

Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. From meta- + ancient Greek νεϕρός kidney, after German Metanephron. In form metanephron after ancient Greek nouns in -ον. Compare French métanéphros. Compare the parallel formations mesonephros, pronephros.

Pronunciation

metanephros

/ˌmɛtəˈnɛfrɒs/