Petrifaction

Part of speech: noun (n.)

1. The process of petrifying, or changing into stone; conversion of any organic matter (animal or vegetable) into stone, or a substance of stony hardness.

2. The state or condition of being petrified.

3. That which is petrified; popularly, a body incrusted with stony matter; an incrustation.

4. Fig.: Hardness; callousness; obduracy. "Petrifaction of the soul." Cudworth.