| Acronym | Meaning |
 | RPM | Revolutions Per Minute |
| PSYOP | Psychological Operations |
| LI | Lithium |
| SI | Slovenia (ISO 3166 And FIPS 10-4 Country Code Digram) -Socialist International - Sports Illustrated - Syst?me International (French |
| MTQ | Martinique (ISO 3166 Trigram) |
| OBS | Observation/Observer - Obsolete - Obstacle -Off Balance Sheet - Optical Burst Switching (IEEE) - Organic Brain Syndrome - Organization(al) Breakdown Structure |
| SAG | Sango Language (ISO 639-2 Code) |
| ROL | Romanian Leu (ISO 4217 Currency Code) |
| PN | Piconewton |
| GDR | General Distribution Release (Microsoft Term For A Software Service Release; Between Hotfix And Service Pack) |
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