noun, plural atheromas, atheromata [ath-uh-roh-muh-tuh] . Pathology.
a sebaceous cyst.
a mass of yellowish fatty and cellular material that forms in and beneath the inner lining of the arterial walls.

1700–10; < Neo-Latin, Latin: a tumor filled with gruellike matter < Greek athḗrōma, equivalent to athḗr(ē) gruel + -ōma -oma

atheromatous [ath-uh-rom-uh-tuhs, -roh-muh-] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
atheroma (ˌæθəˈrəʊmə)
n , pl -mas, -mata
pathol a fatty deposit on or within the inner lining of an artery, often causing an obstruction to the blood flow
[C18: via Latin from Greek athērōma tumour full of matter resembling gruel, from athēra gruel]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

"encysted tumor," 1706, from L., from Gk. atheroma, from athere "groats, porridge;" in ref. to what is inside, + -oma.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

atheroma ath·er·o·ma (āth'ə-rō'mə)
n. pl. ath·er·o·mas or ath·er·o·ma·ta (-mə-tə)
A deposit or degenerative accumulation of lipid-containing plaques on the innermost layer of the wall of an artery.

ath'er·o·ma·to'sis (-tō'sĭs) n.
ath'er·om'a·tous (-rŏm'ə-təs, -rō'mə-) adj.
The American Heritage® Stedman's Medical Dictionary
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