| Acronym | Meaning |
 | PIM | Parameterized Ionospheric Model - Path Of Intended Motion - Pediatric Index Of Mortality - Personal Information Manager/Management - Presence And Interworking Mobility - Processor-In-Memory - Program Integration Manager - Protocol Independent Multicast |
| MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| MANPADS | MAN-Portable Air Defence System |
| LUX | Luxembourg (ISO 3166 Trigram) |
| AGARD | Advisory Group For Aerospace Research And Development |
| SMP | Standard Military Pattern |
| NST | (UK) Nimrod Software Team |
| MJ | Millijoule |
| LAW | Light Antitank Weapon |
| ATAPI | Advanced Technology Attachment Packet Interface |
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