Crustation

Pronunciation: /ˈsiˈɑɹjuˈsteɪʃən/

Crustation (noun)

  1. A hard, outer covering that forms on a surface, often after drying, cooling, or chemical change.
  2. A shell-like covering on some animals, especially those with hard outer parts.

Examples

  • The crustation formed a hard outer layer on the surface.
  • After drying, the crustation became a hard outer layer.