Meaning of heterokaryosis

het•er•o•kar•y•o•sis

Pronunciation: (het"ur-u-kar"ē-ō'sis), [key]
— n. Biol.
  1. condition in which a binucleate or multinucleate cell contains genetically dissimilar nuclei.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.