| Acronym | Meaning |
 | FSC | Federal Supply Classification -Forest Stewardship Council (ecological Pressure Group) |
| WHO | World Health Organisation |
| CX | Christmas Island (ISO 3166 Digram) - One Hundred And Ten (in Roman Numerals) |
| VG | British Virgin Islands (ISO 3166 Digram) |
| ULF | Ultra Low Frequency |
| AY | Antarctica (FIPS 10-4 Territory Code) |
| 2D | Two |
| LOL | Laughing Out Loud (Internet Short-hand) |
| ACT | R/PM -ACT-R/Perceptual-Motor (cognitive Model) |
| SVK | Slovakia (ISO 3166 Trigram) |
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