The Collaborative International Dictionary of English v.0.48:

Resoluble \Res"o*lu*ble\ (r?z"?-l?-b'l), a.[L. resolubolis: cf.
   F. r['e]soluble. See Resolve, and cf. Resolvable.]
   Admitting of being resolved; resolvable; as, bodies resoluble
   by fire. --Boyle. -- Res"o*lu*ble*ness, n.
   [1913 Webster]