incrusted (?.)

• backed
• calcified
• callous
• calloused
• case-hardened
• crusted
• crusty
• crystallized
• fossilized
• granulated
• hardened
• hornified
• indurate
• indurated
• lapidified
• ossified
• petrified
• reinforced
• rigidified
• sclerotic
• set
• solidified
• steeled
• stiffened
• strengthened
• toughened
• vitrified