| Acronym | Meaning |
| SECDEF | (U.S.) Secretary Of Defense |
| TC | Technetium |
| TNT | TriNitroToluene |
| RU | Russian Language (ISO 639-1 Code) |
| NRDC | (U.S.) Natural Resources Defense Council |
| XRML | EXtensible Rights Markup Language |
| RORO OR RO | Ro -Roll-On/Roll-Off (ferry) |
| PAYD | Pay As You Drive |
| WSC | Weapon System Catalogue |
| BBD | Barbados Dollar (ISO 4217 Currency Code) |