| coloration | dyeing |
| Coloration de Feulgen | Feulgen stain |
| Coloration de Gram | Gram staining |
| Coloration de graphe | Graph coloring |
| Coloration de Nissl | Nissl body |
| Coloration de Ziehl-Neelsen | Ziehl-Neelsen stain |
| Coloration PAS | Periodic acid-Schiff stain |
| coloration syntaxique | syntax highlighting |
| colorectal | colorectal |
| colorer | stain |
| Colorfield Painting | Color Field |
| Coloriage | Coloured drawing |
| colorier | colorize |
| colorimétrie | colourimetry |
| colorimétrique | colorimetric |
| colorisation | colorization |
| Colorisation cinématographique | Film colorization |
| coloriser | colorize |
| colorié | colored |
| coloré | colorful |
| coloscopie | colonoscopy |
| colossal | enormous |
| Colossal Cave Adventure | Colossal Cave Adventure |
| colosse | whopper |
| Colosse de Néron | Colossus of Nero |
| Colosse de Rhodes | Colossus of Rhodes |
| Colosses de Memnon | Colossi of Memnon |
| Colossiens | Colossians |
| Colossochelys atlas | Testudo atlas |
| Colossoma macropomum | Tambaqui |
| Colossus | Colossus computer |
| Colostethus | Colostethus |
| colostomie | colostomy |
| colostrum | colostrum |
| Colour by Numbers | Culture Club |
| colporter | hawk |
| colporteur | gossip |
| colporteur de nouvelles à sensation | sensationalist |
| colporteur de ragots | gossip |
| colporteuse | gossip |
| colporteuse de nouvelles à sensation | sensationalist |
| colporteuse de ragots | gossip |
| colposcope | colposcope |
| Colposcopie | Colposcopy |
| Colt Anaconda | Colt Anaconda |
| Colt Delta Elite | Colt Delta Elite |
| Colt Double Eagle | Colt Double Eagle |
| Colt King Cobra | Colt King Cobra |
| Colt Python | Colt Python |
| Colt Single Action Army | Colt Single Action Army |
| COLT Telecom Group | COLT Telecom Group |
