— pronephric /proh nef"rik/ , adj.
/proh nef"ros, -reuhs/ , n. , pl. pronephroi /-roy/ , pronephra /-reuh/ . Embryol.
one of the three embryonic excretory organs of vertebrates, which becomes the functional kidney of certain primitive fishes. Cf. mesonephros, metanephros .
[ 1875-80; pro- PRO- 2 + nephrós kidney ]