| Abbreviation | Definition |
|---|---|
| MCDS | Multifunction CRT Display System |
| MCDU | Multi-function CRT (Cathode Ray Tube) Display Unit |
| MCDU | Multifunction CRT Display Unit |
| MCE | Mechanism Control Electronics |
| MCF | Maintenance and Checkout Facility |
| MCF | Major Component Fail |
| MCF | Mission Control Facility |
| MCIU | Manipulator Controller Interface Unit |
| MCIU | Master Control and Interface Unit |
| MCIU | Mission Control and Interface Unit |
| MCL | Mass Change Log |
| MCL | Master Configuration List |
| MCLT | Maximum Cruise Level Thrust |
| MCM | MADS (Modular Auxiliary Data System) Control Module |
| MCM | Master Control Module |
| MCN | Master Change Notice |
| MCO | Mars Climate Orbiter |
| MCOP | Mission Control Operations Panel |
| MCP | Master Change Proposal |
| MCP | Master Computer Program |