| clima desértico | desert climate |
| clima equatorial | equatorial climate |
| clima mediterrânico | Mediterranean climate |
| clima oceânico | oceanic climate |
| Clima polar | Polar climate |
| Clima semi-árido | Semi-arid climate |
| clima social | social climate |
| Clima tropical | Tropical climate |
| Climacteridae | Australasian treecreeper |
| climatologia | climatology |
| climatologista | climatologist |
| climatério | climacteric |
| climatólogo | climatologist |
| climax | climax |
| Climene | Clymene |
| climático | climatic |
| Clindamicina | Clindamycin |
| Clingen | Clingen |
| Clinoclase | Clinoclase |
| Clinopodium | Clinopodium |
| Clint Eastwood | Clint Eastwood |
| Clinton | Clinton |
| Clinton Joseph Davisson | Clinton Davisson |
| Clinâmen | Clinamen |
| Clio | Clio |
| clipe | clip |
| clipe de papel | clip |
| CLIPSAS | CLIPSAS |
| clique | brain wave |
| clique (ruído) | clickis |
| Clique bilabial | Bilabial click |
| clique duplo | double-click |
| Clismafilia | Klismaphilia |
| clister | enema |
| Clitemnestra | Clytemnestra |
| Clitia | Clytie |
| Clitoromegalia | Clitoromegaly |
| clitóride | clitoris |
| clitóris | clitoris |
| clitóris (abreviatura) | clitool |
| clivagem | cleavage |
| Clive Barker | Clive Barker |
| Clive Burr | Clive Burr |
| Clive Owen | Clive Owen |
| Clive Sinclair | Clive Sinclair |
| Clive Staples Lewis | C. S. Lewis |
| Clivia | Clivia |
| Clié | CLIÉ |
| cloaca | cesspool |
| Cloaca Massima | Cloaca Maxima |
| Clobazam | Clobazam |
| Clodoaldo Tavares de Santana | Clodoaldo |
| Clodomiro | Chlodomer |
| Clodulfo de Metz | Chlodulf of Metz |
| Cloisonné | Cloisonné |
| Cloisters | The Cloisters |
| clonagem | cloning |
| Clonagem humana | Human cloning |
| Clonazepam | Clonazepam |
| clone | clone |
| Clone High | Clone High |
| Clonmel | Clonmel |
| Clopidogrel | Clopidogrel |
| Cloppenburg | Cloppenburg |
| cloragem | chlorination |
| cloral | chloral |
