n.
Pronunciation: ˌ he-t ə -r ō - ' ker- ē - ˌ än, - ə n, - ' ka-r ē -
Function: noun
Etymology: New Latin, from heter- + karyon, nucleus, from Greek, nut, kernel
Date: 1941
: a cell (as in the mycelium of a fungus) that contains two or more genetically unlike nuclei