[het-er-uh-kar-ee-on, -uhn]
noun, plural heterokarya [het-er-uh-kar-ee-uh] . Biology.
a cell containing two or more nuclei of differing genetic constitutions.

1940–45; het-ero- + Greek káryon nut, kernel; cf. karyo-

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World English Dictionary
heterokaryon (ˌhɛtərəʊˈkærɪɒn)
biology a fungal cell or mycelium containing two or more nuclei of different genetic constitution
[from hetero- + karyon, from Greek karuon kernel]

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American Heritage
Medical Dictionary

heterokaryon het·er·o·kar·y·on (hět'ər-ə-kār'ē-ŏn', -ən)
A cell having two or more genetically different nuclei.

The American Heritage® Stedman's Medical Dictionary
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