cretize
/ˈkrɛtaɪz/Definitions
1. verb
to convert or change something into a crust or a hard layer
“The process of calcination will cretize the metal oxide, making it suitable for use in the laboratory.”
2. verb
to cover or encrust something with a hard, crusty substance
“The fungus will cretize the tree trunk with a hard, black crust.”