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x disease

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x-dis⋅ease

[eks-di-zeez]
–noun Veterinary Pathology.
1. Also, X-disease. hyperkeratosis (def. 2).
2. blue comb.

Origin:
1915–20

blue comb

–noun Veterinary Pathology.
a disease of birds resembling Bright's disease in humans affecting esp. domestic fowl, characterized by fever, sunken eyes, and shriveling of the skin of the wattles, shanks, and comb.
Also called x-disease.


Origin:
1940–45

hy⋅per⋅ker⋅a⋅to⋅sis

[hahy-per-ker-uh-toh-sis]
–noun
1. Pathology.
a. proliferation of the cells of the cornea.
b. a thickening of the horny layer of the skin.
2. Also called x-disease. Veterinary Pathology. a disease of cattle resulting from their physical contact with or eating of objects or food contaminated by wood preservatives or machinery lubricants containing highly chlorinated naphthalenes, characterized by thickening and hardening of the skin, abnormal secretion of tears and saliva, and diarrhea.

Origin:
1835–45; < NL; see hyper-, keratosis


hy⋅per⋅ker⋅a⋅tot⋅ic [hahy-per-ker-uh-tot-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: blue comb
Pronunciation: -'kOm
Function: noun
: an acute infectious disease of domestic turkeys that is caused by a coronavirus (genusCoronavirus) and is characterized by lack of appetite, weight loss, and wet droppings called also blue comb disease, mud fever

Main Entry: hy·per·ke·ra·to·sis
Pronunciation: -"ker-&-'tO-s&s
Function: noun
Inflected Form: plural hy·per·ke·ra·to·ses /-'tO-"sEz/
1 : hypertrophy of the stratum corneum layer of the skin
2 a : any ofvarious conditions marked by hyperkeratosis b : a disease of cattle that is marked by thickening and wrinkling of the hide, by formation of papillary outgrowths on the buccal mucousmembranes, and often by a watery discharge from eyes and nose, diarrhea, loss of weight, and abortion of pregnant animals and that is caused especially by ingestion of the chlorinated naphthalene ofvarious lubricating oils, by arsenic poisoning, or by inherited congenital ichthyosis called also X-disease, XX diseasehy·per·ker·a·tot·ic /-'tät-ik/ adjective

Main Entry: X–disease
Function: noun
: any of various usually virus diseases of obscure etiology and relationships: as a : MURRAY VALLEY ENCEPHALITIS b : HYPERKERATOSIS 2b
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

hyperkeratosis hy·per·ker·a·to·sis (hī'pər-kěr'ə-tō'sĭs)
n. pl. hy·per·ker·a·to·ses (-sēz)
Hypertrophy of the cornea or the horny layer of the skin. Also called hyperkeratinization.


hy'per·ker'a·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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