It is commonly referred to as a hardening or furring of the arteries.

She stared at the triangular furring of dark hair that bisected his flat, striated abdomen and narrowed to a dusky line just above his jeans.

It was chilly enough that he needed his cloak, and there was a delicate furring of frost on some of the tall weeds beside the roadway.

This precipitation process can cause severe furring of pipes and can, in extreme cases, cause the blockage of disposal pipes.