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atheroma

noun [C]
 
 
/ˌæθ.əˈrəʊ.mə/ US  /-ˈroʊ-/ (plural atheromas , plural atheromata /-tə/ ) specialized

Definition

a substance containing a lot of fat that forms on the inside wall of an artery and causes it to become hard or blockedSubstances and structures in the body
(Definition of atheroma noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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