| Acronym | Meaning |
 | MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| BIP | Battlefield Interoperability Programme (ancestor Of MIP) - Boys Into Party (musical Group) |
| AH | Attohenry |
| RX | Medical Prescription (possibly From Latin Recipere |
| JSD | Juris Scientiae Doctor (Latin |
| JK | Jedi Knight - Just Kidding -Spanair (IATA Airline Designator) |
| NAACP | National Association For The Advancement Of Colored People (N Double-A CP) |
| SWT | Sea Water Tank |
| PIG | Pipeline Inspection Gauge |
| NASS | National Association Of Secretaries Of State [3] |
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