Definities van Oosthoek encyclopedie in de Ensie C
- Cleehills
- Cleerens
- Cleijburg
- Cleistogamie
- Clémangis
- Clematis
- Clémen
- Clemence
- Clemenceau
- Clemens
- Clemens de Bulgaar
- Clemens Maria Hoffbauer
- Clemens non Papa
- Clemens Romanus
- Clemens van Alexandrië
- Clement
- Clement (Franz)
- Clement (Jean Pierre)
- Clementi
- Clementi de Ris
- Clementina
- Clementinae
- Cleobis en Biton
- Cleombrotus
- Cleome
- Cleomedes
- Cleomenes
- Cleon
- Cleonymus
- Cleopas
- Cleopatra
- Cleophantus
- Cleophon
- Clepsydra
- Clerck
- Clercq
- Clercq (Pieter le)
- Clercq (René de)
- Clercq (Willem de)
- Clerfayt
- Cléricalisme
- Clericis laicos
- Clericus
- Clerke
- Clerkenwell
- Clermont
- Clermont Ganneau
- Clermont-Ferrand
- Clermont-Tonnerre
- Clerodendron
- Clerus
- Clery
- Clesse
- Clethra
- Cletus
- Cleuziou
- Cleve
- Clevedon
- Cleveiet
- Cleveland
- Cleveland (Grover)
- Cleveland (John)
- Cleveland-paard
- Clew-baai
- Cliché
- Cliché-voeten
- Clichy-la-Garenne
- Client
- Clifden
- Cliff-dwellers
- Clifford
- Clifford (George)
- Clifford (John)
- Clifford (Thomas)
- Clifford (William Kingdom)
- Clignett
- Climacium
- Climax
- Clinch River
- Clinchant
- Clinge
- Clinici
- Clinton
- Clintoniet
- Clio
- Clioane
- Clipped-haver
- Clisthenes
- Clitancus
- Clitarchus
- Clitheroe
- Clitoris
- Clitumnus
- Clitus
- Clive
- Clivia
- Clivicola
- Cloaca
- Clodio(n
- Clodius
