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sperm-aster n.
A centrosome with astral rays in the cytoplasm of an inseminated ovum; it is brought in by the penetrating spermatozoon and gives rise to the mitotic spindle of the first-cleavage division.


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  • Spermatangium

    [spur-muh-tan-jee-uh m] /ˌspɜr məˈtæn dʒi əm/ noun, plural spermatangia [spur-muh-tan-jee-uh] /ˌspɜr məˈtæn dʒi ə/ (Show IPA) 1. the organ that produces spermatia in red algae.

  • Spermatheca

    noun, plural spermathecae [spur-muh-thee-see] /ˌspɜr məˈθi si/ (Show IPA). Zoology. 1. a small sac or cavity in female or hermaphroditic invertebrates used to store sperm for fertilizing eggs, as in the queen bee. noun 1. a sac or cavity within the body of many female invertebrates, esp insects, used for storing spermatozoa before fertilization takes […]

  • Spermatia

    noun, plural spermatia [spur-mey-shee-uh] /spɜrˈmeɪ ʃi ə/ (Show IPA) 1. Botany. the nonmotile male gamete of a red alga. 2. Mycology. a minute, colorless cell, of certain fungi and lichens, believed to be a male reproductive body, developed within spermogonia. noun (pl) -tia (-tɪə) 1. a nonmotile male reproductive cell in red algae and some […]

  • Spermatic

    adjective 1. of, relating to, or resembling sperm; seminal; generative. 2. pertaining to a spermary. adjective 1. of or relating to spermatozoa: spermatic fluid 2. of or relating to the testis: the spermatic artery 3. of or relating to a spermary spermatic sper·mat·ic (spər-māt’ĭk) adj. Of, relating to, or resembling sperm. Containing, conveying, or producing […]

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