| Acronym | Meaning |
 | ELM | Edge-Localised Mode (plasma Physics) |
| ATA | Advanced Technology Attachment (IBM Personal Computer) - Afghan Transitional Authority - Allen Telescope Array -Antarctica (ISO 3166 Trigram) |
| RAE | UK Royal Aircraft Establishment (?1991) |
| QFE | Quoted For Emphasis -Local Ground Level Atmospheric Pressure (aeronautical Q Code) |
| MV | Millivolt |
| AU | African Union (was OAU Before 2000) - American University -Astronomical Unit - Australia (ISO 3166 Digram) - Austria (FIPS 10-4 Country Code) |
| ILS | Israeli Shekel (ISO 4217 Currency Code) |
| MOU | Memorandum Of Understanding |
| SNCB | Soci?t? Nationale Des Chemins De Fer Belgique (French For Belgian Railways National Society) |
| MECO | Main Engine Cutoff (NASA Code For Point In Space Shuttle Assent When Three Main Engines Are Shut Down Prior To External Tank (ET) Separation) |
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