| Acronym | Meaning |
 | RA | Radium |
| EMU | Electric Multiple Unit - A Method Of Connecting Self-propelled Railway Vehicles Together To Form A Train Under The Control Of One Driver. |
| NRU | Nauru (ISO 3166 Trigram) |
| NFL | National Football League - No-Fire Line |
| RPO | Radiation Protection Officer |
| JPY | Japanese Yen (ISO 4217 Currency Code) |
| CAFAD | Combined Arms For Air Defence |
| OASIS | Ontario Association Of Sewage Industry Services |
| SMX | Server Macro EXpansion |
| CDA | UK Centre For Defence Analysis |
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