| Acronym | Meaning |
 | BQ | British Antarctic Territory (ISO 3166 Digram; Merged With AQ In 1979) - Navassa Island (FIPS 10-4 Territory Code) |
 | GALCIT | Guggenheim Aeronautical Laboratory |
 | NN | Nanonewton |
 | SSBN | Nuclear-Powered Ballistic Missile Submarine (US Navy Hull Classification) |
 | JBFSA | Joint Blue Force Situational Awareness |
 | NP | Nepal (ISO 3166 And FIPS 10-4 Country Code Digram) |
 | UGV | Unmanned Ground Vehicle |
 | BARDA | Biomedical Advanced Research & Development Agency |
 | USDOE | United States Department Of Energy |
 | HCCI | Homogeneous Charge Compression Ignition |