leucosis

noun Veterinary Pathology.

1. leukosis.

noun Veterinary Pathology.

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.

n.

1. The abnormal proliferation of one or more of the leukopoietic tissues.