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leukocytosis

[loo-koh-sahy-toh-sis] /ˌlu koʊ saɪˈtoʊ sɪs/
noun, Physiology, Pathology
1.
an increase in the number of white blood cells in the blood.
Also, leucocytosis.
Origin
1865-1870
1865-70; < New Latin; see leukocyte, -osis
Related forms
leukocytotic
[loo-koh-sahy-tot-ik] /ˌlu koʊ saɪˈtɒt ɪk/ (Show IPA),
adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for leukocytosis

leucocytosis

/ˌluːkəʊsaɪˈtəʊsɪs/
noun
1.
a gross increase in the number of white blood cells in the blood, usually as a response to an infection
Derived Forms
leucocytotic, especially (US) leukocytotic (ˌluːkəʊsaɪˈtɒtɪk) adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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leukocytosis in Medicine

leukocytosis leu·ko·cy·to·sis or leu·co·cy·to·sis (lōō'kə-sī-tō'sĭs)
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.


leu'ko·cy·tot'ic (-tŏt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for leukocytosis

abnormally high number of white blood cells (leukocytes) in the blood circulation, defined as more than 10,000 leukocytes per cubic millimetre of blood. Leukocytosis is most commonly the result of infection. It may also occur after strenuous exercise, convulsions (e.g., epilepsy), emotional stress, anesthesia, the administration of epinephrine, pregnancy and labour, and lack of oxygen (as in the early phases of adaptation to high altitude). Leukocytosis is also observed in certain parasitic infestations, intoxications (metabolic or chemical), chronic diseases (e.g., leukemia), and allergic reactions.

Learn more about leukocytosis with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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