A morbid condition marked by the presence of atheroma.(noun)
The Century Dictionary (Public Domain)
Use "atheromatosis" in a sentence
"Skrzydlewski Z, Worowski K (1977) Formation of insoluble low density lipoprotein (LDL) complexes with basic proteins in vitro and in walls of arteries changed by atheromatosis."
"An autopsy had revealed Stephen suffered from an undiagnosed heart condition, atheromatosis, or a thickening of the arteries."
"And according to reports obtained by The Sun, Gately died from atheromatosis, a thickening of the arteries."