| Acronym | Meaning |
| HIV | Human Immunodeficiency Virus |
| LUCA | Last Universal Common Ancestor |
| TGT | Target |
| USD | (U.S.) Under-Secretary Of Defense -U.S. Dollar (ISO 4217 Currency Code) |
| CODEC | Coder-Decoder / Compressor-Decompressor / Compression-Decompression Algorithm |
| RWS | Remote Weapon Station |
| LEC | Local Exchange Carrier |
| ALD | Accounting Line Designator (nuclear Weapon Targeting) |
| AGC | Apollo Guidance Computer - Automatic Gain Control |
| SAN | Sanskrit Language (ISO 639-2 Code) |