Source : Webster's Revised Unabridged Dictionary (1913)

Disintegrable \Dis*in"te*gra*ble\, a.
   Capable of being disintegrated, or reduced to fragments or
   powder.

         Argillo-calcite is readily disintegrable by exposure.
                                                  --Kirwan.

Source : WordNet®

disintegrable
     adj : capable of melting [syn: {meltable}]