| Abbreviation | Definition |
|---|---|
| C | Course angle |
| c | Cycle |
| C | One Hundred |
| C&D | Control and Display |
| C&DH | Command and Data Handling |
| C&DS | Command and Data Simulator |
| C&M | Control and Monitoring |
| C&T | Communications and Tracking |
| C&TSS | Communication and Tracking Sub-System |
| C&W | Caution and Warning |
| C/C | Combustion Chamber |
| C/D | CountDown |
| C/F | Center Frequency |
| C/L | CheckList |
| C/L | Closed Loop |
| C/O | ChangeOut |
| C/O | CheckOut |
| C/O | Contamination/Overpressure |
| C/O | CutOff |
| C/P | Cold Plate |