| Acronym | Meaning |
| CATS | Computer Active Technology Suspension |
| NAV | Navajo Language (ISO 639-2 Code) |
| MEC | Maine Central Railroad (AAR Reporting Mark) - Manta |
| LRU | Line-Replaceable Unit |
| PUP | Pull-Up Point |
| PB | PolyButylene |
| EFF | Electronic Frontier Foundation |
| FIE | Fly-In Echelon |
| CTI | Co-operative Target Identification |
| DAN | Danish Language (ISO 639-2 Code) |