atheroma
noun [ C ] medical specialized uk/ˌæθ.əˈrəʊ.mə/ us/ˌæθ.əˈroʊ.mə/ atheromas or atheromata uk/ˌæθ.əˈrəʊ.mə.tə/ us/ˌæθ.əˈroʊ.mə.tə/
动脉粥样化，动脉粥状硬化斑块，粉瘤
a substance containing a lot of fat that forms on the inside wall of an artery and causes it to become hard or blocked