circumcision (n.)

"the act of cutting off the foreskin," late 12c., from Latin circumcisionem (nominative circumcisio), noun of action from past participle stem of circumcidere "to cut around; cut, clip, trim, prune off," from circum "around" (see circum-) + caedere "to cut" (from PIE root *kae-id- "to strike.").