incrustation

n. [ L. incrustatio: cf. F. incrustation. See Incrust. ] [ 1913 Webster ]

1. The act of incrusting, or the state of being incrusted. [ 1913 Webster ]

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. [ 1913 Webster ]

3. (Arch.) A covering or inlaying of marble, mosaic, etc., attached to the masonry by cramp irons or cement. [ 1913 Webster ]

4. (Fine Arts) Anything inlaid or imbedded. [ 1913 Webster ]