Incrustation

Part of speech: noun (n.)

1. The act of incrusting, or the state of being incrusted.

2. A crust or hard coating of anything upon or within a body, as a deposit of lime, sediment, etc., from water on the inner surface of a steam boiler.

3. A covering or inlaying of marble, mosaic, etc., attached to the masonry by cramp irons or cement.

4. Anything inlaid or imbedded.