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[spur-mat-uh-jen-uh-sis, spur-muh-tuh-] /spɜrˌmæt əˈdʒɛn ə sɪs, ˌspɜr mə tə-/
noun, Biology.
the origin and development of spermatozoa.
the formation and maturation of spermatozoa in the testis See also spermatocyte (sense 1)

spermatogenesis sper·mat·o·gen·e·sis (spər-māt’ə-jěn’ĭ-sĭs, spûr’mə-tə-)
Formation and development of spermatozoa by meiosis and spermiogenesis. Also called spermatocytogenesis.
sper·mat’o·ge·net’ic (-jə-nět’ĭk) or sper·mat’o·gen’ic (-jěn’ĭk) adj.
(spər-māt’ə-jěn’ĭ-sĭs, spûr’mə-tə-)
The formation and development of spermatozoa. Spermatogenesis in humans begins with the spermatogonium, the diploid cell that undergoes mitosis to form new spermatogonia as well as cells called primary spermatocytes. Each primary spermatocyte then undergoes the first meiotic division to produce two secondary spermatocytes. Each secondary spermatocyte undergoes the second meiotic division to produce two nonmotile cells called spermatids. The four spermatids then develop flagella and become sperm. Since some of the original spermatogonia replace themselves, the males are able to produce large numbers of sperm continuously after sexual maturity.


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  • Spermatogenous

    [spur-muh-toj-uh-nuh s] /ˌspɜr məˈtɒdʒ ə nəs/ adjective 1. producing spermatozoa.

  • Spermatogonium

    [spur-mat-uh-goh-nee-uh m, spur-muh-tuh-] /spɜrˌmæt əˈgoʊ ni əm, ˌspɜr mə tə-/ noun, plural spermatogonia [spur-mat-uh-goh-nee-uh, spur-muh-tuh-] /spɜrˌmæt əˈgoʊ ni ə, ˌspɜr mə tə-/ (Show IPA). Cell Biology. 1. one of the undifferentiated germ cells giving rise to spermatocytes. spermatogonium /ˌspɜːmətəˈɡəʊnɪəm/ noun (pl) -nia (-nɪə) 1. (zoology) an immature male germ cell that divides to form many […]

  • Spermatoid

    adjective 1. resembling sperm. spermatoid sper·ma·toid (spûr’mə-toid’) adj. Resembling a sperm or the whiplike tail of a sperm.

  • Spermatolysis

    spermatolysis sper·ma·tol·y·sis (spûr’mə-tŏl’ĭ-sĭs) n. The destructive dissolution of spermatozoa.

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