atheroma
Pronunciation: /ˌaθəˈrəʊmə/
noun
- degeneration of the walls of the arteries caused by accumulated fatty deposits and scar tissue, and leading to restriction of the circulation and a risk of thrombosis. See also atherosclerosis.
- the fatty material which forms deposits in the arteries.

Origin:
late 16th century: via Latin from Greek athērōma, from athērē, atharē 'groats'