The Collaborative International Dictionary of English v.0.48:

Sanable \San"a*ble\, a. [L. sanabilis, fr. sanare to heal, fr.
   sanus sound, healthy. See Sane.]
   Capable of being healed or cured; susceptible of remedy.
   [1913 Webster]

   Syn: Remediable; curable; healable.
        [1913 Webster]