Source : Webster's Revised Unabridged Dictionary (1913)

Amendable \A*mend"a*ble\, a.
   Capable of being amended; as, an amendable writ or error. --
   {A*mend"a*ble*ness}, n.

Source : WordNet®

amendable
     adj : capable of being corrected by additions; "an amendable flaw"
           [syn: {correctable}]