4456 pōróō (from pōros, a kind of marble) – properly, made of stone; (figuratively) insensible; dull, unperceptive as a rock; calloused (hardened); i.e. unresponsive (dense), completely lacking sensitivity or spiritual perception.

[From the time of Hippocrates, 4456 (pōróō) means "harden," like a formed callus which petrifies (cf. DNTT, 2, 153).

4456 (pōróō) was applied to bony formations on the joints (a "callus," ossification) – hence meaning "to petrify" (as in "covering over with a callus"). 4456 (pōróō) is only used figuratively in the NT meaning "to deaden (dull), to make (render) obtuse (dull, dead)" (Souter).]

harden, blind

Apparently from poros (a kind of stone); to petrify, i.e. (figuratively) to indurate (render stupid or callous) -- blind, harden.

πωλοῦνται — 1 Occ.
πωλοῦντας — 5 Occ.
πωλοῦντες — 1 Occ.
πωλούντων — 2 Occ.
πωλοῦσιν — 1 Occ.
πῶλον — 12 Occ.
πώποτε — 6 Occ.
ἐπώρωσεν — 1 Occ.
ἐπωρώθη — 1 Occ.
ἐπωρώθησαν — 1 Occ.
πεπωρωμένην — 1 Occ.
πωρώσει — 1 Occ.
πώρωσιν — 1 Occ.
πώρωσις — 1 Occ.
πῶς — 118 Occ.
Ῥαὰβ — 2 Occ.
ῥαββί — 15 Occ.
ραββουνι — 2 Occ.
ἐραβδίσθην — 1 Occ.
ῥαβδίζειν — 1 Occ.