| Acronym | Meaning |
 | MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| XV | Fifteen (in Roman Numerals) |
| DNDI | Drugs For Neglected Diseases Initiative |
| SO | Shared Object (Unix) - Sheriff's Office - Significant Other -Somalia (ISO 3166 And FIPS 10-4 Country Code Digram) |
| SACLANT | Supreme Allied Commander AtLANTic |
| AWP | Awaiting Parts (SM&R Code) |
| PTA | Parent-Teacher Association |
| RBCI | Radio Based Combat Identification |
| MANPRINT | MANpower And PeRsonnel INTegration |
| PDQ | Pre-Defined Queries (Siebel Packages) - Pretty Damn Quick |
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