| Acronym | Meaning |
![](file.png) | M | Middle |
![](file.png) | M | Million |
![](file.png) | M | Missing (Data) |
![](file.png) | M | Monitor (MON Preferred) |
![](file.png) | M | Number Of Revolutions Required For The Rendezvous |
![](file.png) | M | Isc Miscel Laneous |
![](file.png) | M | LGS Microwave Landing Guidance System |
![](file.png) | M | Lss Mission |
![](file.png) | M | LAMDM Launch Aft |
![](file.png) | M | LAMonochrome Lens Assembly |
![](file.png) | M | PSS Main Parachute Support Structure |
![](file.png) | M | B/SMegabits Per Second |
![](file.png) | M | BACMarshall Booster Assembly Contractor |
![](file.png) | M | DSDMate/Demate Stiffleg Derrick |
![](file.png) | M | ECCA Master Electrical Common Connector Assembly |
![](file.png) | M | ESAMiniature Electrostatic Accelerometer |
![](file.png) | M | ESAModular Equipment Stowage Assembly |
![](file.png) | M | Icom Missile Command (Army) |
![](file.png) | M | ITTSE Mobile Lgor Tracking Telescope System |
![](file.png) | M | LcsManagement Information And Control System |
![](file.png) | M | PTPMain Propulsion Test Program |
![](file.png) | M | PTSMultipurpose Tool Set |
![](file.png) | M&C | Maintenance And Checkout |
![](file.png) | M&C | Monitor And Control Panel |
![](file.png) | M&F | Materials And Facilities |
![](file.png) | M&M | Materials And Maintenance |
![](file.png) | M&O | Maintenance And Operations |
![](file.png) | M&P | Materials And Processes |
![](file.png) | M&R | Maintenance And Refurbishment |
![](file.png) | M&R | Maintenance And Repair |
![](file.png) | M&RF | Maintenance And Refurbishing Facility |
![](file.png) | M+R | Maintenance And Refurbishment |
![](file.png) | M+R | Maintenance And Repair |
![](file.png) | M+R | Time In Days Before Move Operations |
![](file.png) | M-KG | Meter-Kilogram |
![](file.png) | M-M-L-S | Model-Modes-Loads-Stresses |
![](file.png) | M/F | Maintenance Factor |
![](file.png) | M/I | Minimum Impulse |
![](file.png) | M/L | Maintenance Loop |
![](file.png) | M/LR | Maintenance Loop Recorder |
![](file.png) | M/P | Main Parachute |
![](file.png) | M/R | Mixture Ratio (Fuel To Oxidizer) |
![](file.png) | M/S | Measurement Stimuli |
![](file.png) | M/SCI | Mission/Safety Critical Item |
![](file.png) | M/U | Mockup |
![](file.png) | M50 | Mean Of 1950 (Coordinate System) |
![](file.png) | MA | Maintenance (STS) |
![](file.png) | MA | Maintenance Ability |
![](file.png) | MA | Master |
![](file.png) | MA | Master Alarm |