Circumcision

google

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Middle English: from late Latin circumcisio(n- ), from the verb circumcidere (see circumcise).

wiktionary

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From Latin circumcīsiō, from circumcīdō(“cut around”), from circum(“about, around; through”) + caedō(“cut, hew”).

etymonline

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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.").