| Subject | German | English |
| med. | antihämophiler Faktor C | plasma thromboplastin antecedent |
| med. | antihämophiler Faktor C | antihemophilic factor C |
| med. | antihämophiler Faktor C | hemophilic factor C (PTA factor) |
| med. | antihämophiler Faktor C | antihemophilic globulin C |
| med. | antihämophiler Faktor C | factor XI (PTA factor) |
| opt. | C-Faktor | C-factor (ratio of the flight height to the smallest contour interval accurately plottable) |
| med. | C-Faktor | C-factor |
| opt. | C-Faktor | altitude-contour ratio |