| Acronym | Meaning |
 | FACA | (US) Federal Advisory Committee Act |
| A&S | Armament & Standardisation |
| ACT | Adaptive Control Of Thought (cognitive Model) ? Australian Capital Territory (postal Symbol) ? American College Test(ing Program) |
| CTSS | Compatible Time-Sharing System |
| LJJ | Lord Justices Of Appeal |
| PCI | U.S. Pacific Islands Trust Territory (ISO 3166 Trigram; Obsolete 1986) -Peripheral Component Interconnect (computer Bus) |
| LARP | Live-Action Role-Playing |
| TNT | TriNitroToluene |
| ILS | Israeli Shekel (ISO 4217 Currency Code) |
| TBBPA | TetraBromoBisPhenol-A |
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