Cesarean vs. Caesarean
“Cesarean” and “Caesarean” name the same operation and related adjective. Cambridge marks “Cesarean” as the usual US spelling and “Caesarean” as the usual UK spelling, with additional capitalization and “-ian” variants also recorded.
Use “Cesarean” in US-oriented writing and “Caesarean” in UK-oriented writing unless your publication or medical organization specifies another house style.
Key details
Further guidance
Uk Style
Use “Caesarean” for UK-oriented prose when no local house style overrides it.
Us Style
Use “Cesarean” for US-oriented prose when no local house style overrides it.
Variation Boundary
Capitalization and the variant spellings “Cesarian/Caesarian” also occur; follow the governing medical or editorial style where consistency matters.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Cesarean — English meaning (opens in a new tab)Cambridge University Press · Dictionary treatment identifying “Cesarean” as the usual US spelling and “Caesarean” as the usual UK spelling