sclerosis

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noun, plural scle·ro·ses

[-seez] .

Pathology. a hardening or induration of a tissue or part, or an increase of connective tissue or the like at the expense of more active tissue.

Botany. a hardening of a tissue or cell wall by thickening or lignification.

Origin:
1350–1400; Middle English < Medieval Latin < Greek sklḗrōsis hardening. See scler-, -osis

Related forms

scle·ro·sal, adjective

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To sclerosis

Collins

World English Dictionary

sclerosis (sklɪəˈrəʊsɪs)

—n , pl -ses
1.	pathol arteriosclerosis atherosclerosis Compare multiple sclerosis a hardening or thickening of organs, tissues, or vessels from chronic inflammation, abnormal growth of fibrous tissue, or degeneration of the myelin sheath of nerve fibres, or (esp on the inner walls of arteries) deposition of fatty plaques
2.	the hardening of a plant cell wall or tissue by the deposition of lignin
3.	a debilitating lack of progress or innovation within an institution or organization

[C14: via Medieval Latin from Greek sklērōsis a hardening]

scle'rosal

—*adj*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10

Sclerosis is always a great word to know.

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Etymonline

Word Origin & History

sclerosis

"morbid hardening of the tissue," late 14c., from M.L. sclirosis "a hardness, hard tumor," from Gk. sklerosis "hardening," from skleros "hard," related to skellein "to dry up, parch," from PIE *skle-ro-, from base *skele- "to parch, wither."

Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage

Medical Dictionary

sclerosis scle·ro·sis (sklə-rō'sĭs)
n. pl. scle·ro·ses (-sēz)

The hardening of a tissue or part due to chronic inflammation.
A thickening or hardening of a body part or system especially from excessive formation of fibrous interstitial or glial tissue.
Any of various diseases characterized by thickening or hardening, such as arteriosclerosis.

Example sentences

He is also a pilot, undeterred by multiple sclerosis.

The continent is undergoing one of its periodic bouts of sclerosis.

Twin study surveys genome for cause of multiple sclerosis.

Symptoms of multiple sclerosis appear in a variety of ways.

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demyelination Lou Gehrig's disease multiple sclerosis NMSS osteosclerosis sclerema

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