or leu·co·cy·to·sis


noun Physiology, Pathology.

an increase in the number of white blood cells in the blood.

Origin of leukocytosis

From New Latin, dating back to 1865–70; see origin at leukocyte, -osis
Related formsleu·ko·cy·tot·ic [loo-koh-sahy-tot-ik] /ˌlu koʊ saɪˈtɒt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for leukocytosis

Historical Examples of leukocytosis

  • Leukocytosis may or may not occur in these conditions, and is not important.

  • The infectious diseases in which leukocytosis is absent (p. 160) often cause a slight decrease of leukocytes.

  • Chemotaxis alone will not explain the continuance of leukocytosis for more than a short time.

  • Although the number of leukocytes bears no relation to the anemia, leukocytosis is common, being due to the same cause.

  • This cell never appears in normal blood; extremely rarely in leukocytosis; and never abundantly in lymphatic leukemia.

leukocytosis in Medicine


n. pl. leu•ko•cy•to•ses (-sēz)

An abnormally large increase in the number of white blood cells in the blood, often occurring during an acute infection or inflammation.
Related formsleu′ko•cy•totic (-tŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.