| climatological | climatológico |
| climatologist | climatólogo |
| climatology | climatología |
| climax | apogeo |
| Climax community | Comunidad clímax |
| climb | aumentar |
| climb upon | montar a |
| climber | alpinista |
| climbing | ascenso |
| Climbing gourami | Anabantidae |
| climbing iron | crampón |
| climbing plant | enredadera |
| Climbing shoe | Pies de gato |
| clime | paraje |
| clinch | cerrar |
| Clinch a bargain | Cerrar trato |
| clincher | remachador |
| clinching | decisivo |
| Clindamycin | Clindamicina |
| cling | afiliarse |
| cling film | film estirable |
| cling to | aferrarse a |
| cling to each other | abrazarse fuertemente |
| cling to one another | abrazarse fuertemente |
| clinging | adherencia |
| clingy | pegajoso |
| clinic | centro de salud |
| clinical | clínico |
| Clinical depression | Depresión |
| Clinical neurophysiology | Neurofisiología |
| clinical psychology | psicología clínica |
| clinical symptom | síntomas clínicos |
| clinical thermometer | termómetro clínico |
| clink | tintineo |
| clinker | escoria |
| clinking | tintineo |
| Clinopodium | Clinopodium |
| Clint Eastwood | Clint Eastwood |
| Clinton | Clinton |
| Clinton County | Condado de Clinton |
| Clinton Davisson | Clinton Joseph Davisson |
| Clinton Nuclear Generating Station | Central nuclear de Clinton |
| Clints | Lapiaz |
| Clio | Clío |
| Cliometrics | Cliometría |
| clip | cortar |
| clip art | clip-art |
| clipboard | tablilla con sujetapapeles |
| clipper | recortador |
| clippers | máquina cortadora de pelo |
| Clipperton Island | Isla Clipperton |
| clipping | recorte |
| clique | camarilla |
| Clique problem | Problema de la clique |
| clit | clítoris |
| Clitellata | Clitellata |
| Clitellum | Clitellum |
| clitic | clítico |
| clitoral glans | glande del clítoris |
| clitoridectomy | clitoridectomía |
| clitoris | clítoris |
| Clive Barker | Clive Barker |
| Clive Burr | Clive Burr |
| Clive Owen | Clive Owen |
| Clive Sinclair | Clive Sinclair |
| Clivia | Clivia |
| Clivia miniata | Clivia miniata |
| CLIÉ | Clié |
| CLNS | Clns |
| cloaca | cloaca |
