Definition of polykaryocyte in US English:

polykaryocyte

(also polycaryocyte)

noun

Biology Medicine
  • A multinucleated giant cell; (in early use) specifically an osteoclast (now rare).

Origin

Late 19th century. From poly- + karyo- + -cyte; apparently coined by W. H. Howell.

Pronunciation

polykaryocyte

/ˌpɒlɪˈkarɪə(ʊ)sʌɪt/