| Acronym | Meaning |
 | 4WD | Four Wheel Drive (cf. AWD) |
| PPCLI | Princess Patricia's Canadian Light Infantry (regiment) |
| CONAD | U.S. Continental Air Defense Command |
| EIS | Environmental Impact Statement |
| AVIM | Aviation Intermediate Maintenance |
| OTA | Office Of Technology Assessment -Orthodontic Technicians Association |
| IRST | Infra-red Search And Track |
| DMCA | Digital Millennium Copyright Act |
| FISH | Fluorescence In-Situ Hybridisation |
| YMCA | Young Men's Christian Association |
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