Calcification (noun)

1. The process of forming or becoming hard and stonelike due to a buildup of calcium.
2. The result of this process, especially in soft tissue, which can cause problems.

Origin:

Late latin calcifīcātiō, from latin calcifīcāre to calcify, from calc-, calx lime.

Examples:

1. The calcification of the arteries was causing him heart problems.
2. The calcification of the bones is a normal part of aging.
3. The calcification of the pineal gland was found to affect sleep patterns.
4. The calcification of the muscle tissue was causing him pain.
5. The calcification of the breast tissue was a sign of a possible malignancy.