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  • Webster's Revised Unabridged Dictionary
    • n Polygeny (Biol) The theory that living organisms originate in cells or embryos of different kinds, instead of coming from a single cell; -- opposed to monogenesis.
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Century Dictionary and Cyclopedia
    • n polygeny In anthropology, the multiple genesis of man; the supposed independent origin of the human races, as opposed to monogenism, or the theory of unity of genesis.
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Chambers's Twentieth Century Dictionary
    • Polygeny the multiple genesis of man
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Webster's Revised Unabridged Dictionary
Poly-, + genesis, or root of Gr. gi`gnesqai to be born