| Acronym | Meaning |
| HEO | Highly Elliptical Orbit |
| INDIGO | (U.S.) INtelligence DIvision Gaming Operation |
| SEATO | Southeast Asian Treaty Organization |
| RDECOM | (U.S.) Research |
| SAT | Formerly Scholastic Aptitude Test And Scholastic Assessment Test; Now Known Solely By The Initials - Small Arms Trainer |
| A | Atto |
| SAHB | Sensational Alex Harvey Band |
| GPMP | General Purpose Macro Processor |
| PYF | French Polynesia (ISO 3166 Trigram) |
| HTG | Haitian Gourde (ISO 4217 Currency Code) |