'Impassableness' definitions:

Definition of 'Impassableness'

From: GCIDE
  • Impassable \Im*pass"a*ble\, a. [Cf. Unpassable.] Incapable of being passed; not admitting a passage; as, an impassable road, mountain, or gulf. --Milton. -- {Im*pass"a*ble*ness}, n. -- {Im*pass"a*bly}, adv. [1913 Webster]