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[mez-uh-nef-ros, mes-, mee-zuh-, -suh-] /ˌmɛz əˈnɛf rɒs, ˌmɛs-, ˌmi zə-, -sə-/

noun, plural mesonephroi
[mez-uh-nef-roi, mes-, mee-zuh-, -suh-] /ˌmɛz əˈnɛf rɔɪ, ˌmɛs-, ˌmi zə-, -sə-/ (Show IPA). Embryology.
one of the three embryonic excretory organs of vertebrates, becoming the functional kidney of fishes and amphibians and becoming part of the tubules or ductules in the reproductive systems of higher vertebrates.
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 See also pronephros, metanephros

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.
mes’o·neph’ric adj.


Read Also:

  • Mesonephric duct

    mesonephric duct n. See wolffian duct.

  • Mesonephric fold

    mesonephric fold n. See urogenital ridge.

  • Mesonephric ridge

    mesonephric ridge n. The embryonic urogenital ridge, from which the more medial gonadal ridge is later demarcated.

  • Mesonephroma

    mesonephroma mes·o·ne·phro·ma (měz’ō-nə-frō’mə, měs’-) n. Any of various rare tumors possibly derived from the mesonephros and occurring in the genital tract. Also called mesometanephric carcinoma.

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