- A small rug used by Moslems to kneel and prostrate themselves upon during devotions.跪毯：穆斯林在祈祷时用作下跪和拜倒的小地毯
- Sycorax
- sycoses
- sycosis
- sycosis barbae
- Sydenham's chorea
- codswallop
- Cody
- cod–liver oil
- coeca
- coecilian
- Coe College
- coecum
- coed
- coedit
- coeducation
- coeducations
- coefficient
- coefficient of correlation
- coefficient of friction
- coefficient of self-induction
- coefficient of viscosity
- coefficients
- -coel
- -coel
- coelacanth