sclerosis

[skli-roh-sis]

noun, plural scle·ro·ses

[skli-roh-seez] /sklɪˈroʊ siz/.

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 of sclerosis

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

Related formsscle·ro·sal, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sclerosis

Historical Examples of sclerosis

You must have read his little book on sclerosis of the posterior columns.
The Man from Archangel
A. Conan Doyle
The radial artery was palpated to determine the presence of sclerosis.
Arteriosclerosis and Hypertension:
Louis Marshall Warfield
Opinion as to whether or not sclerosis is present, when it is slight, may differ.
Arteriosclerosis and Hypertension:
Louis Marshall Warfield
It seems to produce a sclerosis of the pyramidal tracts of the cord.
New, Old, and Forgotten Remedies: Papers by Many Writers
Various
The arterioles are thickened, the sclerosis being either of the intima or media or of both.
Arteriosclerosis and Hypertension:
Louis Marshall Warfield

British Dictionary definitions for sclerosis

sclerosis

noun plural -ses (-siːz)

pathol 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 plaquesCompare arteriosclerosis, atherosclerosis, multiple sclerosis
the hardening of a plant cell wall or tissue by the deposition of lignin
a debilitating lack of progress or innovation within an institution or organization

Derived Formssclerosal, adjective

Word Origin for sclerosis

C14: via Medieval Latin from Greek sklērōsis a hardening

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

Word Origin and History for sclerosis

"morbid hardening of the tissue," late 14c., from Medieval Latin sclirosis "a hardness, hard tumor," from Greek sklerosis "hardening," from skleros "hard" (see sclero-). Figurative use by 1954.

sclerosis in Medicine

sclerosis

[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.