incrustation
in-crus-ta-tion
noun
A hard, often unwanted, layer covering a surface or object.
"The old kettle had a thick incrustation of limescale."
Thesaurus
Synonyms: crust, encrustation
in-crus-ta-tion
A hard, often unwanted, layer covering a surface or object.
"The old kettle had a thick incrustation of limescale."
Synonyms: crust, encrustation