| Acronym | Meaning |
| GCI | Ground-controlled Interception |
| IRB | International Rugby Board |
| GPS | General Problem Solver - Global Positioning System |
| GEV | Ground Effect Vehicle |
| ROH | Raeto-Romansh Language (ISO 639-2 Code) |
| USNH | United States Naval Hospital |
| DES | Deep Ecliptic Survey |
| IEW | Intelligence And Electronic Warfare |
| VAT | Value-Added Tax -Vatican City-State (ISO 3166 Trigram) |
| ABSTRIPS | Abstraction-Based STRIPS |