- Original: πώρωσις - Transliteration: Porosis - Phonetic: po'-ro-sis - Definition: 1. the covering with a callus 2. obtrusiveness of mental discernment, dulled perception 3. the mind of one has been blunted a. of stubbornness, obduracy - Origin: from G4456 - TDNT entry: 22:05,8 - Part(s) of speech: Noun Feminine - Strong's: From G4456 ; stupidity or callousness: - blindness hardness. Total KJV Occurrences: 3 • blindness, 2 Romans 11:25; Eph 4:18 • hardness, 1 Mar 3:5