encrustation

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

encrust, formation, incrust, incrustation