Fusion of the nuclei of two cells, as occurs in fertilization or true conjugation. [karyo- + G. gamos, marriage]
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kar·yo·gam·ic .kar-ē-ō-'gam-ik adj
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kary·og·a·my (kar″e-ogґə-me) [karyo- + Gr. gamos marriage] the union of the nuclei of cells following plasmogamy in fertilization. karyogamic adjMedical dictionary. 2011.