| Cybergrind | Cybergrind |
| Cyberjaya | Cyberjaya |
| cybernetic | cybernétique |
| cyberneticist | cybernéticien |
| cybernetics | cybernétique |
| Cyberpunk | Cyberpunk |
| cyberterrorism | cyberterrorisme |
| cyberwarfare | guerre informatique |
| Cybill Shepherd | Cybill Shepherd |
| cyborg | cyborg |
| Cybrid | Cybride |
| Cycadaceae | Cycadaceae |
| Cycadales | Cycadophyta |
| Cycas | Cycadaceae |
| Cycas circinalis | Cycas circinalis |
| Cycas revoluta | Cycas du Japon |
| Cyclades | Cyclades |
| Cycladic civilization | Civilisation des Cyclades |
| cyclamate | cyclamate |
| cyclamen | cyclamen |
| Cyclanthaceae | Cyclanthaceae |
| cycle | tour |
| Cycle detection | Algorithme du lièvre et de la tortue |
| Cycle graph | Cercle |
| cycle path | piste cyclable |
| Cycle polo | Polo à bicyclette |
| Cycle race | Cyclisme sur route |
| cycle racer | coureur cycliste |
| Cycle racing | Cyclisme |
| cycle track | piste cyclable |
| cyclic | cyclique |
| Cyclic adenosine monophosphate | Adénosine monophosphate cyclique |
| Cyclic group | Groupe cyclique |
| Cyclic model | Modèle cyclique |
| Cyclic nucleotide-gated ion channel | Protéine-canal HCN |
| Cyclic permutation | Permutation circulaire |
| Cyclic voltammetry | Voltampérométrie cyclique |
| cyclical | cyclique |
| Cyclin | Cyclines |
| Cyclin-dependent kinase | Kinase dépendante des cyclines |
| cycling | cyclisme |
| cyclist | cycliste |
| cyclize | cycliser |
| cyclo- | cyclo- |
| Cyclo-cross | Cyclo-cross |
| cycloalkane | cycloalcane |
| cyclobutane | cyclobutane |
| Cycloconverter | Cycloconvertisseur |
| cycloheptane | cycloheptane |
| cyclohexane | cyclohexane |
| Cycloheximide | Cycloheximide |
| cycloid | cycloïde |
| cyclone | cyclone |
| Cyclone Catarina | Cyclone Catarina |
| Cyclone Gonu | Cyclone Gonu |
| Cyclone Sidr | Cyclone Sidr |
