Meaning of leukosis

leu•ko•sis

Pronunciation: (l-kō'sis), [key]
— n. Vet. Pathol.
  1. any of several diseases occurring chiefly in chickens, involving proliferation of the leukocytes and characterized by paralysis, blindness, formation of tumors in the internal organs, and bone calcification.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.