encrustation
en-crus-ta-tion
noun
A hard or rough layer covering a surface, formed by deposited material.
"The old kettle had a thick encrustation of limescale."
Thesaurus
Synonyms: crust, incrustation
en-crus-ta-tion
A hard or rough layer covering a surface, formed by deposited material.
"The old kettle had a thick encrustation of limescale."
Synonyms: crust, incrustation