| Acronym | Meaning |
 | RON | Romanian New Leu (ISO 4217 Currency Code) |
| RSI | Repetitive Strain Injury |
| DOD | U.S. Department Of Defense |
| GSO | General Services Officer (U.S. Department Of State) |
| PDU | Police Dog Unit - Power Distribution Unit - Protocol Data Unit |
| MITL | Man-In-The-Loop |
| GUM | Guam (ISO 3166 Trigram) |
| NWA | National Wrestling Alliance |
| GQ | Equatorial Guinea (ISO 3166 Digram) -Gentlemen's Quarterly (magazine) -Guam (FIPS 10-4 Territory Code) |
| J | Joule |
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