The story
- Proto-Indo-European*(s)ker-
- Ancient Greekκίρκος (kírkos)
- Latincircus
- Latincircum
- Latincircum-
- Proto-Indo-European*kh₂eyd-
- Proto-Indo-European*kh₂éydeti
- Proto-Italic*kaidō
- Latincaedō
- Latincircumcīdō
- Latincircumcīsiō
- Old Frenchcircumcisioun
- Middle Englishcircumcisioun
- English todaycircumcision
From Middle English circumcisioun, from Old French circumcisiun (modern French circoncision) and its etymon Latin circumcīsiō, from circumcīdō (“cut around”), from circum (“about, around; through”) + caedō (“cut, hew”). By surface analysis, circumcis(e) + -ion.
Etymology from Wiktionary, CC BY-SA 4.0.