1. (n.) The act of excising or cutting out or off; extirpation; destruction.

2. (n.) The act of cutting off from the church; excommunication.

3. (n.) The removal, especially of small parts, with a cutting instrument.

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