atherothrombosis

noun
ath·ero·throm·bo·sis | \ˌa-thə-(ˌ)rō-thräm-ˈbō-səs, -thrəm- \
plural atherothromboses\-ˌsēz \

Medical Definition of atherothrombosis 

: the formation of a blood clot within an artery as a result of atherosclerosis As with any drug used to prevent atherothrombosis, vascular events are frequent among patients treated with aspirin or other antiplatelet drugs, and this phenomenon is sometimes described as treatment failure.— Carlo Patrono et al., The New England Journal of Medicine, 1 Dec. 2005

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