| Acronym | Meaning |
| LD | Laser Designator - Limited Deployment - Line Of Departure |
| TWI | The Welding Institute |
| IFC | International Finance Corporation (part Of The World Bank) -Independent Film Channel |
| GWARS | Ground Warfare System (simulation) |
| PAPI | Precision Approach Path Indicator (aviation) |
| AZ | Arizona (postal Symbol) - Azerbaijan (ISO 3166 Digram) |
| TNO | Trans-Neptunian Object |
| SE | Seychelles (FIPS 10-4 Country Code) - South-East - Sweden (ISO 3166 Digram) -Synthetic Environment - System Engineering |
| DHA | DocosaHexaenoic Acid |
| NRU | Nauru (ISO 3166 Trigram) |