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karyˈogamy
karyˈogamy n.
Brit. 
/ˌkarɪˈɒɡəmi/
, /ˌkarɪˈɒɡəmi/U.S. /ˌkɛriˈɑɡəmi/
[-gamy comb. form] fusion of cell nuclei./ˌkɛriˈɑɡəmi/ΘΚΠ
the world > life > biology > biological processes > cellular processes > [noun] > fusion
nuclear fusion1887
karyogamy1891
autogamy1898
chromidiogamy1912
plasmogamy1912
cytogamy1939
1891 Jrnl. Royal Microsc. Soc. 49 In Hydatina, as in some Hymenoptera, there is established between arrhenotoky (parthenogenetic production of males) and fecundating karyogamy, a relation so necessary that the second is impossible without the first.
1901 G. N. Calkins Protozoa iii. 97 It is quite possible that many cases of so-called conjugation are only instances of plastogamy, or fusion of the cell-body, and are not followed by union of the nuclei (karyogamy), as in fertilization.
1920 W. E. Agar Cytol. 72 The condition of the gametic nuclei..at the moment of karyogamy or nuclear fusion.
1970 J. Webster Introd. Fungi 187 Karyogamy (i.e. nuclear fusion) occurs within certain of the binucleate cells.
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