| Acronym | Meaning |
| STP | S?o Tom? And PrĀncipe (ISO 3166 Trigram) -Standard Temperature And Pressure |
| ATG | Antigua And Barbuda (ISO 3166 Trigram) |
| H | Hecto |
| RTI | Run-Time Infrastructure (Simulation) |
| AVE | Avestan Language (ISO 639-2 Code) |
| CY | Welsh Language (ISO 639-1 Code) |
| FOGC | Federal Oil And Gas Council |
| UUV | Unmanned Underwater Vehicle |
| MEU | U.S. Marine Expeditionary Unit - Maximum Expected Utility |
| WMI | Wildlife Management Institute |