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1. Oxford Dictionary

   spermatogonium

   • IPA[ˌspəːmətə(ʊ)ˈɡəʊnɪəm]

   英式

   • n.
     a cell produced at an early stage in the formation of spermatozoa, formed in the wall of a seminiferous tubule and giving rise by mitosis to spermatocytes.

   • noun: spermatogonium, plural noun: spermatogonia