| Circulation thermohaline | Thermohaline circulation |
| circulation à double sens | two-way traffic |
| circulatoire | circulatory |
| circuler | move on |
| circumbinaire | circumbinary |
| circumnavigateur | circumnavigator |
| circumnavigation | circumnavigation |
| Circumpolaire | Circumpolar star |
| circumterrestre | circumterrestrial |
| Circumvesuviana | Circumvesuviana |
| Circus Circus | Circus Circus Las Vegas |
| Circus Maximus | Circus Maximus |
| Circé | Circe |
| circé à branchies longues | streaklight tubeshoulder |
| circée | enchanter's nightshade |
| cire | wax |
| cire d'abeille | beeswax |
| cire d'abeilles | beeswax |
| Cire perdue | Lost-wax casting |
| cire à cacheter | sealing wax |
| cire-pompes | brown noser |
| Cirencester | Cirencester |
| cirer | polish |
| cirer les bottes | fawn on |
