| Acronym | Meaning |
 | MARBEF | Marine Biodiversity And Ecosystem Functioning |
| IREA | Intermountain Rural Electric Association |
| SLR | Single-Lens Reflex (camera) |
| AFDB | African Development Bank |
| EJ | Exajoule |
| KQ | Kenya Airways (IATA Airline Designator) - Kingman Reef (FIPS 10-4 Territory Code) |
| MRL | Multiple Rocket Launcher |
| SWZ | Swaziland (ISO 3166 Trigram) |
| PA | Panama (ISO 3166 Digram) - Paraguay (FIPS 10-4 Country Code) -Partial Agonist -Pennsylvania (postal Symbol) - Petampere -PolyAmide (Nylon) - Prince Albert Piercing - Public Address (vocal Amplification System) - Public Affairs |
| NM | Nanometre |
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