Quick Definition
πωρόω v. I harden, render callous
Strong's Definition
apparently from poros (a kind of stone); to petrify, i.e. (figuratively) to indurate (render stupid or callous)
KJV Usage: blind, harden
UBS Dictionary of the Greek New Testament
verb | πώρωσις
27.51 · Learn · Be Willing To Learn
to cause to be completely unwilling to learn, to cause the mind to be closed (a figurative extension of meaning of πωρόω ‘to harden,’ not occurring in the NT) to cause someone to be completely unwilling to learn and to accept new information In 2CO 3:14 and in JHN 12:40 νόημα and καρδία function syntactically as so-called ‘accusatives of specification.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
πωρόω, -@: 1 aor. ἐπώρωσα (Jn. xii. 40 T Tr WH); pf. πεπώρωκα; pf. pass. ptep. πεπωρωμένος ; 1 aor. pass. ἐπωρώθην ; (πῶρος, hard skin, a hardening, induration) ; io cover with a thick skin, to harden by covering with a callus, [R. V. everywhere simply to harden]: metaph., καρδίαν, to make the heart dull, Jn. xii. 40; Pass. to grow hard or callous, become dull, lose the power of understanding: Ro. xi. 7; τὰ νοήματα, 2 Co. iii. 14; ἡ καρδία, Mk. vi. 52; viii.17. Cf. Fritzsche, Com. on Mk. p. 78 sq.; on Rom. ii. p. 451 sq. [(Hippocr., Aristot., al.)]
Mounce Concise Greek Dictionary
πωρόω pōroō 5x
to petrify; to harden; in NT to harden the feelings, Jn. 12:40; pass. to become callous, unimpressible, Mk. 6:52; 8:17; Rom. 11:7; 2 Cor. 3:14*
Abbott-Smith Greek Lexicon
πωρόω, -ῶ
(< πῶρος, 1. a stone. 2. a callus), [in LXX: Jb 17:7 B (כּהה), Pr 10:20 A*;]
to petrify, harden, form a callus. Metaph., π. τ. καρδίαν, Jo 12:40. Pass., Ro 11:7; τ. νοήματα, II Co 3:14; ἡ καρδία, Mk 6:52 8:17.†
Liddell-Scott-Jones — Greek-English Lexicon
πωρόω (pōroō) — to harden. πωρ-όω, (from {πῶρος}) petrify, λίθος πεπωρωμένος [Refs 2nd c.AD+]
II. cause a stone or callus to form:—passive, of a stone forming in the bladder, [Refs 5th c.BC+]
II.2. unite fractured bones by a callus, [Refs 1st c.AD+]:—passive, become hard, [Refs 4th c.BC+]; become thickened, coagulated, [Refs 5th c.BC+]
III. in passive, become insensible, of the flesh, ὑπὸ τῆς πεπωρωμένης ἐκ τοῦ στέατος σαρκός [Refs 3rd c.BC+]: metaphorically, become insensible, obtuse, or blind, of the heart, [LXX+NT]