Source : Webster's Revised Unabridged Dictionary (1913)

Severable \Sev"er*a*ble\, a.
   Capable of being severed. --Encyc. Dict.

Source : WordNet®

severable
     adj : capable of being divided or dissociated; "often drugs and
           crime are not dissociable"; "the siamese twins were not
           considered seperable"; "a song...never conceived of as
           severable from the melody"; [syn: {dissociable}, {separable}]