cephalic BrE AmE sə ˈfæl ɪk sɪ-, ke-, kɪ- —In words containing (-)cephal-, the medical profession in Britain generally prefers k . The alternative pronunciation with s is nevertheless widespread, and preferred in American English.
CEPHALIC
Meaning of CEPHALIC in English
Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012