amphikaryon

am·phi·kar·y·on

(am'fĕ-kar'ē-on),
A diploid nucleus containing two haploid sets of chromosomes.
[amphi- + G. karyon, kernel]

amphikaryon

[am′fiker′ē·on]
Etymology: Gk, amphi + karyon, nucleus
a nucleus containing the diploid number of chromosomes. amphikaryotic, adj.