| Acronym | Meaning |
| CDM | Clean Development Mechanism (Kyoto Protocol) - Cold Dark Matter (astronomy) |
| SSRN | Nuclear-Powered Radar Picket Submarine (retired US Navy Hull Classification) |
| BSA | Birmingham Small Arms (motorcycles Company) - Boy Scouts Of America - Brigade Support Area |
| FU | Smoke (METAR Code) |
| NA | Nauruan Language (ISO 639-1 Code) |
| ASD(PA) | (U.S.) Assistant Secretary Of Defense (Public Affairs) |
| FMSF | False Memory Syndrome Foundation |
| GESTAPO | GEheime STAatsPOlizei (German Secret State Police) |
| SMASS | Small Main-Belt Asteroid Spectroscopic Survey |
| MSB | Main Support Battalion - Most Significant Bit (or Byte) |