Source : Webster's Revised Unabridged Dictionary (1913)

Amputation \Am`pu*ta"tion\, n. [L. amputatio: cf. F.
   amputation.]
   The act of amputating; esp. the operation of cutting off a
   limb or projecting part of the body.

Source : WordNet®

amputation
     n 1: a condition of disability resulting from the loss of one or
          more limbs
     2: a surgical removal of all or part of a limb