| Conca de Barberà | Conca de Barberà |
| Conca dei Marini | Conca dei Marini |
| concasseuse | breaker |
| concaténer | concatenate |
| concave | concave |
| concavité | concavity |
| Concentrateur | Ethernet hub |
| concentration | concentration |
| Concentration alvéolaire minimale | Minimum alveolar concentration |
| concentration de polluant | pollutant concentration |
| concentration en soufre | sulphur concentration |
| concentration maximale admissible | maximum admissible concentration |
| concentration maximale d'immission | maximum immission concentration |
| concentration économique | economic concentration |
| concentrer | concentrate |
| concentrique | concentric |
| concentré | extract |
| Concepción de La Vega | Concepción de la Vega |
| Concepción del Uruguay | Concepción del Uruguay |
| concept | concept |
| concept d'environnement | concept of environment |
| Concept et objet | Concept and object |
| concepteur-rédacteur | copywriter |
| conception | understanding |
| Conception assistée par ordinateur | Computer-aided design |
| Conception asssistée par ordi | CAD |
| conception de la vie | philosophy of life |
| Conception de logiciel | Software design |
| Conception de médicament | Drug design |
| Conception de telescope | Telescope design |
| Conception de télescope | Telescope design |
| Conception des lentilles | Lens design |
| Conception dirigée | Birth control |
| conception erronée | error |
| Conception virginale | Virgin birth of Jesus |
| Conceptisme | Conceptismo |
| conceptualisation | conceptualisation |
| conceptuel | conceptual |
| concernant | to |
| concernant le muscle couturier | sartorial |
| concerner | concern |
| concert | concert |
| Concert Spirituel | Concert Spirituel |
| concertation | concertation |
| Concertgebouw | Concertgebouw |
| concertina | concertina |
| concerto | concerto |
| Concerto en fa de Gershwin | Concerto in F |
| Concerto pour clarinette de Mozart | Clarinet Concerto |
| Concerto pour la main gauche de Ravel | Piano Concerto for the Left Hand |
| Concerto pour orchestre | Concerto for Orchestra |
| Concerto pour orchestre de Bartók | Concerto for Orchestra |
| Concerto pour violon | Violin Concerto |
| Concerto pour violon de Beethoven | Violin Concerto |
| Concerto pour violon de Brahms | Violin Concerto |
| Concerto pour violon de Dvořák | Violin Concerto |
| Concerto pour violon de Schumann | Violin Concerto |
| Concerto pour violon de Tchaïkovski | Violin Concerto |
| Concerto pour violoncelle de Dvořák | Cello Concerto |
| Concertos brandebourgeois | Brandenburg concertos |
| concerté | deliberate |
| concession | dealership |
| concessionnaire | concessionaire |
| Concessions | To be coming up to meet |
| concevable | conceivable |
| concevoir | picture |
| Concevoir un bâtiment | Engineer |
| Concha y Toro | Concha y Toro Winery |
| Conchas | Conchas |
| Conches-sur-Gondoire | Conches-sur-Gondoire |
| Conchita Martínez | Conchita Martínez |
| Conchita Martínez Granados | Conchita Martínez Granados |
| Conchobar Mac Nessa | Conchobar mac Nessa |
| Conchy-sur-Canche | Conchy-sur-Canche |
| concierge | custodian |
| concile | council |
| Concile cadavérique | Cadaver Synod |
| Concile d'Éphèse | Council of Ephesus |
| Concile de Bâle | Council of Basel |
| Concile de Chalcédoine | Council of Chalcedon |
| Concile de Constance | Council of Constance |
| Concile de Jérusalem | Council of Jerusalem |
| Concile de Pāṭaliputra | Third Buddhist council |
| Concile de Rome | Council of Rome |
| Concile de Trente | Council of Trent |
| Concile de Troyes | Council of Troyes |
| Concile de Vienne | Council of Vienne |
| Concile de Whitby | Synod of Whitby |
| Concile in Trullo | Quinisext Council |
| Concile œcuménique | Ecumenical council |
| Conciles bouddhiques | Buddhist councils |
| Conciles de Clermont | Council of Clermont |
| Conciles de Tolède | Councils of Toledo |
| conciliable | agreeable |
| conciliant | amenable |
| conciliation | reconciliation |
| Conciliatoire | Pacifier |
| concilier | patch up |
| concis | condensed |
| concision | curtness |
| concisément | briefly |
| conclave | conclave |
| conclaviste | conclavist |
| conclu en sous-main | hole-and-corner |
| concluant | conclusive |
| conclure | top off |
