- polyspermy
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—polyspermic /pol'ee sperr"mik/, adj./pol"ee sperr'mee/, n.the fertilization of an ovum by several spermatozoa. Cf. dispermy, monospermy.[1885-90; see POLYSPERMIA, -Y3]
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Universalium. 2010.
polyspermy
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Polyspermy — Pol y*sper my, n. (Biol.) Fullness of sperm, or seed; the passage of more than one spermatozo[ o]n into the vitellus in the impregnation of the ovum. [1913 Webster] … The Collaborative International Dictionary of English
polyspermy — polyspermy. См. полиспермия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
Polyspermy — In biology, polyspermy describes an egg that has been fertilized by more than one sperm. Diploid organisms normally contain two copies of each chromosome, one from each parent. The cell resulting from polyspermy, on the other hand, contains three … Wikipedia
polyspermy — Penetration of more than one spermatozoon into an ovum at time of fertilization. Occurs as normal event in very yolky eggs (eg. bird), but then only one sperm fuses with egg nucleus. Many other eggs have mechanisms to block polyspermy … Dictionary of molecular biology
polyspermy — polispermija statusas T sritis ekologija ir aplinkotyra apibrėžtis Augalų ir gyvūnų apvaisinimo būdas – į gemalo maišelį ar kiaušialąstę vienu metu patenka ne vienas, o keletas spermatozoidų. Su kiaušialąstės branduoliu susilieja tik vienas iš jų … Ekologijos terminų aiškinamasis žodynas
polyspermy — polispermija statusas T sritis augalininkystė apibrėžtis Reiškinys, kurio atveju į vieną kiaušialąstę patenka ir ją apvaisina keletas spermių. atitikmenys: angl. polyspermy rus. полиспермия … Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas
polyspermy — n. [Gr. polys, many; sperma, seed] Entry of several sperm into the ovum … Dictionary of invertebrate zoology
polyspermy — noun The penetration of an ovum by more than one sperm … Wiktionary
polyspermy — The entrance of more than one spermatozoon into the ovum. SYN: polyspermia (1), polyspermism. * * * poly·sper·my päl i .spər mē n, pl mies the entrance of several spermatozoa into one egg compare DISPERMY, MONOSPERMY … Medical dictionary
polyspermy — n. fertilization of an egg by several sperm cells … English contemporary dictionary
