atherothrombosis

noun

ath·​ero·​throm·​bo·​sis ˌa-thə-(ˌ)rō-thräm-ˈbō-səs, -thrəm- 

plural atherothromboses -ˌsēz 

: 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

atherothrombotic

ˌa-thə-(ˌ)rō-thräm-ˈbä-tik, -thrəm- 

adjective

The use of aspirin is primarily for the primary and secondary prevention of atherothrombotic disease.

—Kenneth A. Bauer, The Journal of the American Medical Association