| Acronym | Meaning |
 | NCA | National Command Authority |
| LEO | Low Earth Orbit |
| BIH | Bihari Languages (ISO 639-2 Code) |
| IMSA | Illinois Mathematics And Science Academy - International Mind Sports Association - International Motor Sports Association |
| MOF | Ministry Of Finance (Japan) |
| BD | Bangladesh (ISO 3166 Digram) - Bermuda (FIPS 10-4 Territory Code) |
| EST | Estonian Language (ISO 639-2 Code) |
| DR | Dead Reckoning -Dominican Republic (FIPS 10-4 Country Code) -Danmarks Radio (Danish Broadcasting Corporation) |
| HBV | Hepatitis B Virus |
| ITU | Intent-to-Use - International Telecommunication Union (International Telegraph Union 1865-1932) |
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