Incrustation

n.	1.
	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.	(Arch.) A covering or inlaying of marble, mosaic, etc., attached to the masonry by cramp irons or cement.
	4.	(Fine Arts) Anything inlaid or imbedded.

Noun	1.	incrustation - the formation of a crust Synonyms: encrustation
	2.	incrustation - a hard outer layer that covers something Synonyms: crust, encrustation
	3.	incrustation - a decorative coating of contrasting material that is applied to a surface as an inlay or overlay Synonyms: encrustation

blanketing, blocking, blotting out, cementwork, cloaking, clouding, coating, coverage, covering, crust, curtaining, eclipse, eclipsing, envelopment, enwrapment, enwrapping, eschar, hiding, laying on, mantling, masking, obduction, obscuring, occultation, overlaying, overspreading, pargeting, pastry shell, piecrust, plasterwork, scab, scale, screening, sheathing, shell, shielding, shrouding, stalactite, stalagmite, stuccowork, superimposition, superposition, upholstering, upholstery, veiling, wrapping