THESAURUS
excision
abscission, amputation, anastomotic operation, annihilation, avulsion, bloodless operation, butchering, capital operation, chopping, cleavage, compensating operation, corneal transplant, crescent operation, cutting, cutting out, deracination, destruction, dichotomy, disentanglement, drawing, drawing out, dredging, drilling, elective operation, elimination, emergency operation, enucleation, eradication, evolvement, evulsion, excavation, exclusion, exploratory operation, expression, exsection, extinction, extirpation, extraction, extrication, fenestration operation, fission, heart transplant, interval operation, kidney transplant, laceration, major operation, mining, minor operation, mutilation, operation, organ transplant, organ transplantation, palliative operation, pressing out, pulling, quarrying, radical operation, removal, rending, rescission, resection, ripping, ripping out, scission, section, severance, slashing, slicing, splitting, squeezing out, surgery, surgical intervention, surgical operation, surgical technique, tearing, the knife, transplant, unrooting, uprooting, withdrawal, wresting out
ROGET THESAURUS
excision
Subtraction
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.