Mesonephros meaning

mĕz'ə-nĕf'rəs, -rŏs', mĕs'-
The second of the three excretory organs that develop in a vertebrate embryo, becoming the functioning kidney in fish and amphibians but replaced by the metanephros in higher vertebrates.
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The excretory organ serving as the adult kidney of fishes and amphibians and as the embryonic kidney of higher vertebrates: the mesonephros and its duct develop into the epididymis and vas deferens in higher vertebrates.
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The second of the three excretory organs that develop in a vertebrate embryo, becoming the functioning kidney in fish and amphibians but replaced by the metanephros in birds, reptiles, and mammals.
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(biology) The second of the three excretory organs of the developing embryo; the Wolffian body.
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Origin of mesonephros

  • meso– Greek nephros kidney
    From American Heritage Dictionary of the English Language, 5th Edition