|pronephros See also metanephros the middle part of the embryonic kidney in vertebrates, becoming the adult kidney in fishes and amphibians and the epididymis in reptiles, birds, and mammals|
|[C19: New Latin, from |
mesonephros mes·o·neph·ros (měz'ə-něf'rəs, -rŏs', měs'-)
n. pl. mes·o·neph·roi (-něf'roi')
The second of the three excretory organs that develop in a vertebrate embryo, replaced by the metanephros in higher vertebrates. Also called wolffian body.