Lexical Definition

‎πώρωσις‎ pṓrōsis (po'-ro-sis) hardening ^G:N-F
from ‎πωρόω‎

blindness, hardness.

• stupidity or callousness

Abbott-Smith

* πώρωσις, -εως, ἡ (< πωρόω),
a covering with a callus, a hardening: metaph., Mk 3:6, Ro 11:25, Eph 4:18.†

Abbott-Smith References

Liddell-Scott-Jones

πώρωσις-ωσις, εως, ἡ,

process by which the extremities of fractured bones are reunited by a callus, [Refs 5th c.BC+]

__II metaphorically, obtuseness, blindness, τῆς καρδίας [NT]

_{LSJ Scripture Refs: Mark.3.5 ☩ Eph.4.18 ☩ Rom.11.25}