- critical incident stress
- critical thinking
- croceus
- croissant
- cross - sectional study
- cross border
- cross country, cross-country
- cross curricular links
- cross dressing
- cross section
- cross-dresser
- cross-functional
- crossing-over
- crossover
- crotaphion
- crowdfunding
- crowding
- crowdsourcing
- crucem tuam
- cruciatus
- crucifix
- cruciformis
- crudelitas
- crudus
- cruentus
- cruising
- cruor
- crura cerebri
- cruralis
- crus
- crush
- crush syndrom
- crush syndrome
- crusta
- crustosus
- crux
- crux medicorum
- cryaesthesia
- cryodessicatio
- cryoglobulinaemia
- cryoglobulinum
- cryopathia
- cryoprecipitatum
- cryptocephalus
- cryptococcosis
- cryptoleucaemia
- cryptophthalmus
- cryptorrhoea
- crystallinus
- crystallisatio