Which term describes the abnormal hardening of artery walls?

The term that describes the abnormal hardening of artery walls is arteriosclerosis. This condition specifically refers to the thickening and stiffening of arterial walls, which can lead to reduced elasticity and blood flow. The term "arteriosclerosis" encompasses various forms of arterial rigidity, primarily affecting small arteries and arterioles.

While sclerosis is a general term that signifies hardening of tissue in any part of the body, arteriosclerosis specifically targets the arteries. Atherosclerosis, on the other hand, is a form of arteriosclerosis characterized by the buildup of fats, cholesterol, and other substances inside the arteries, leading to plaque formation and further narrowing. Arteritis refers to inflammation of the artery walls and is not directly related to hardening. Therefore, among the options given, arteriosclerosis accurately captures the concept of hardening specific to arteries.