Dict: strongs - indurat
Strongs:
G4456 @ πωρόω pōroō po-ro'-o Apparently from πῶρος pōros (a kind of stone); to petrify that is (figuratively) to indurate (render stupid or callous): - blind harden.
G4645 @ σκληρύνω sklērunō sklay-roo'-no From G4642; to indurate that is (figuratively) render stubborn: - harden.