Pronunciation: (in"kru-stā'shun),[key] —n. 1. an incrusting or being incrusted.
2. a crust or coat of anything on the surface of a body; covering, coating, or scale.
3. the inlaying or addition of enriching materials on or to a surface or an object.
4. the enriching materials inlaid on or added to a surface or an object. Also,encrustation.