| circonstancié | detailed |
| circonvallation | circumvallation |
| circonvenir | dodge |
| circonvolution cérébrale | gyrus |
| circonvolutions cérébrales | convolution |
| Circovirus | Porcine circovirus |
| circuit | circuit |
| Circuit automobile de Dijon-Prenois | Dijon-Prenois |
| Circuit Bugatti | Bugatti Circuit |
| Circuit de Catalogne | Circuit de Catalunya |
| Circuit de Charade | Charade Circuit |
| Circuit de Kyalami | Kyalami |
| Circuit de la Sarthe | Circuit de la Sarthe |
| Circuit de la Sarthe automobile | Circuit de la Sarthe |
| Circuit de Monaco | Circuit de Monaco |
| Circuit de Nevers Magny-Cours | Circuit de Nevers Magny-Cours |
| Circuit de Papez | Papez circuit |
| Circuit de Reims-Gueux | Reims-Gueux |
| Circuit de Rouen-les-Essarts | Rouen-Les-Essarts |
| Circuit de Silverstone | Silverstone Circuit |
| Circuit de Snetterton | Snetterton Motor Racing Circuit |
| Circuit de Spa-Francorchamps | Circuit de Spa-Francorchamps |
| Circuit de Suzuka | Suzuka Circuit |
| circuit de vitesse | speedway |
| Circuit de voie | Track circuit |
| Circuit de Zandvoort | Circuit Park Zandvoort |
| Circuit de Zolder | Zolder |
| Circuit en parallèle | Series and parallel circuits |
| Circuit en série | Series and parallel circuits |
| Circuit Gilles-Villeneuve | Circuit Gilles Villeneuve |
| Circuit hydraulique | Hydraulic circuit |
| circuit imprimé | circuit board |
| Circuit indépendant | Independent circuit |
| Circuit international de Sakhir | Bahrain International Circuit |
| Circuit international de Sepang | Sepang International Circuit |
| Circuit international de Shanghai | Shanghai International Circuit |
| Circuit intégré | Integrated circuit |
| Circuit LC | LC circuit |
| Circuit Paul-Ricard | Circuit Paul Ricard |
| Circuit Pedralbes | Pedralbes Circuit |
| Circuit Permanent de Jerez | Circuito Permanente de Jerez |
| Circuit pneumatique | Air circuit |
| Circuit Prince George | Prince George Circuit |
| Circuit RC | RC circuit |
| Circuit RL | RL circuit |
| Circuit RLC | RLC circuit |
| Circuit routier électrique | Slot car |
| Circuit Switched Data | Circuit Switched Data |
| Circuit urbain de Singapour | Singapore Street Circuit |
| Circuit urbain de Valence | Valencia Street Circuit |
| Circuit à capacités commutées | Switched capacitor |
| Circuit économique | Circular flow of income |
| circuit électrique | electric circuit |
| circuiterie | circuitry |
| Circuito Permanente Del Jarama | Circuito Permanente Del Jarama |
| Circuits continentaux de cyclisme | UCI Continental Circuits |
| circuits électriques | wiring |
| circulaire | circular |
| circulant | circulating |
| circulation | circulation |
| circulation atmosphérique | atmospheric circulation |
| circulation de passage | through traffic |
| Circulation mouvement | Motion |
| circulation océanique | ocean circulation |
| Circulation sanguine | Circulatory system |
| Circulation thermohaline | Thermohaline circulation |
| circulation à double sens | two-way traffic |
