| Acronym | Meaning |
| FENS | Federation Of European Neuroscience Societies |
| RS | Russia (FIPS 10-4 Country Code) |
| DDT | Dichloro-Diphenyl-Trichloroethane (insecticide) - Dynamic Debugging Tool (computing) |
| USNA | United States National Arboretum - United States Naval Academy |
| NHO | N?ringslivets Hovedorganisasjon (Confederation Of Norwegian Enterprises |
| BRIC | Brazil |
| ALGOL | ALGOrithmic Language |
| HK | Hong Kong (ISO 3166 Digram; FIPS 10-4 Territory Code) |
| PBDE | PolyBrominated Diphenyl Ether |
| SMCT | Soldier's Manual Of Common Tasks |