• synonyms


noun, plural ath·er·o·mas, ath·er·o·ma·ta [ath-uh-roh-muh-tuh] /ˌæθ əˈroʊ mə tə/. Pathology.
  1. a sebaceous cyst.
  2. a mass of yellowish fatty and cellular material that forms in and beneath the inner lining of the arterial walls.
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Origin of atheroma

1700–10; < New Latin, Latin: a tumor filled with gruellike matter < Greek athḗrōma, equivalent to athḗr(ē) gruel + -ōma -oma
Related formsath·er·om·a·tous [ath-uh-rom-uh-tuh s, -roh-muh-] /ˌæθ əˈrɒm ə təs, -ˈroʊ mə-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for atheromatous

Historical Examples

  • Can the atheromatous process be influenced with equal or with any success?

    The Lettsomian Lectures 1900-1901

    J. Mitchell Bruce

  • These "abscesses" are frequent and in rupturing leave open ulcers with smooth bases, the atheromatous ulcer.

    Arteriosclerosis and Hypertension:

    Louis Marshall Warfield

  • Thrombosis is favored, and where atheromatous ulcers are formed, embolism is to be feared.

    Arteriosclerosis and Hypertension:

    Louis Marshall Warfield

  • Hauser91 found an aneurismal dilatation of an atheromatous and thrombosed arterial twig in the floor of a recent ulcer.

  • The wall of the aneurism is atheromatous, or calcified; the middle coat may be atrophied.

    Special Report on Diseases of the Horse

    United States Department of Agriculture

British Dictionary definitions for atheromatous


noun plural -mas or -mata (-mətə)
  1. pathol a fatty deposit on or within the inner lining of an artery, often causing an obstruction to the blood flow
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Derived Formsatheromatous (ˌæθəˈrɒmətəs, -ˈrəʊ-), adjective

Word Origin

C18: via Latin from Greek athērōma tumour full of matter resembling gruel, from athēra gruel
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 atheromatous



"encysted tumor," 1706, medical Latin, from Greek atheroma, from athere "groats, porridge" (related to ather "chaff"), in reference to what is inside. For ending, see -oma.

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Online Etymology Dictionary, © 2010 Douglas Harper

atheromatous in Medicine


n. pl. ath•er•o•mas
  1. A deposit or degenerative accumulation of lipid-containing plaques on the innermost layer of the wall of an artery.
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Related formsath′er•o•ma•tosis (-tōsĭs) n.ath′er•oma•tous (-rŏmə-təs, -rōmə-) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.