Abbott-Smith Manual Greek Lexicon
πώρωσις (G4457)
6 * πώρωσις , -εως, ἡ ( πωρόω ), a covering with a callus , a hardening : metaph., Mk 3:6 , Ro 11:25 , Eph 4:18 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain