Meaning of pronephros in English:

pronephros

(also pronephron)

Pronunciation /prəʊˈnɛfrɒs/

noun

Embryology Zoology
  • The most anterior (or superior) and first-developing part of the nephrogenic tissue of vertebrate embryos, which is functional only in the larvae of fishes and amphibians, and persists into adult life only in hagfishes and a few teleosts; = head kidney . Compare mesonephros , metanephros .

Origin

Late 19th century; earliest use found in Ray Lankester (1847–1929), zoologist. From pro- + ancient Greek νεϕρός kidney.