1.  amputation(n = noun.state) - a condition of disability resulting from the loss of one or more limbs;
is a kind of disability, disablement, handicap, impairment
Derived form verb amputate₁

2.  amputation(n = noun.act) - a surgical removal of all or part of a limb;
is a kind of operation, surgery, surgical operation, surgical procedure, surgical process
Derived form verb amputate₁

   The act of amputating; esp. the operation of cutting off a limb or projecting part of the body. [1913 Webster]

N  nonaddition, subtraction, subtraction, subduction, deduction, retrenchment, removal, withdrawal, ablation, sublation, abstraction, garbling mutilation, detruncation, amputation, abscission, excision, recision, curtailment, minuend, subtrahend, decrease, abrasion, subtracted, subtractive, in deduction, less, short of, minus, without, except, except for, excepting, with the exception of, barring, save, exclusive of, save and except, with a reservation, not counting, if one doesn't count.