| Abbreviation | Definition |
|---|---|
| MSWG | Materials Science Working Group |
| MT | Magnetic Tape |
| MT | Master Timer |
| MT | Master Tool |
| MT | Maximum Torque |
| MT | Mean Time |
| MT | Mechanical Technician |
| MT | Metering Truss |
| MT | Mission Time |
| MT | Mission Trajectory |
| MT | MounT |
| MT | Mountain Time |
| MTA | Magnetic Torquer Assembly |
| MTA | Maintenance Task Analysis |
| MTA | Major Test Article |
| MTA | Marshall Trowelable Ablator |
| MTA | Mass Thermal Analysis |
| MTASS | Multi-Mission Three- Axis Stabilized Satellite |
| MTB | Materials Testing Branch |
| MTBD | Mean Time Between Demand |