Definities van Oosthoek encyclopedie in de Ensie C
- Clodoald
- Clodomir
- Cloelia
- Cloisonné
- Cloisonné legeering
- Cloisonné tegels
- Clonakilty
- Clonmel
- Clontarf
- Cloon
- Cloots
- Cloppenburg
- Cloppenburgh
- Clorinde
- Clorivière
- Closener
- Closet
- Clot
- Clothilde
- Clothilla
- Clotho
- Clotted cream
- Clottener lei
- Clouet
- Clough
- Clovis
- Clown
- Cloyne
- Clozel
- Club
- Cluentius
- Cluergolf
- Clumker spaniël
- Clun
- Clunes
- Cluny
- Clunyacensen
- Clupea
- Clupeidae
- Clupeïne
- Cluseret
- Cluses
- Clusia
- Clusiervariabelen
- Clusium
- Clusius
- Cluver
- Cluysenaer
- Clyde
- Clydebank
- Clydesdaler paard
- Clymene
- Clymenos
- Clysma
- Clytaemnestra
- Clytia
- Cn
- Cnethocampa
- Cneudt
- Cnicus benedictus
- Cnidaria
- Cnidus
- Co
- Co-existentie
- Co-logarithmen
- Côa
- Coach
- Coadjutor
- Coadulasen
- Coaequalitas
- Coagulatie
- Coaguleeren
- Coagulum
- Coahuila
- Coalitie
- Coalitieoorlogen
- Coalitievrijheid
- Coatbridge
- Coati
- Coatzacoalcos
- Coaxiaal
- Cob
- Cobaea
- Cobalt
- Cobaltien
- Cobaltum
- Coban
- Cobar
- Cobbe
- Cobbet
- Cobbler
- Cobden
- Cobden-Club
- Cobenzl
- Cobequid-Hills
- Cobet
- Cobham
- Cobija
- Cobitis
- Coblentz
