| Acronym | Meaning |
| FFA | Forum Fisheries Agency -Free-Fire Area - Fusiform Face Area - Football Federation Australia - Future Farmers Of America (today The National FFA Organization) |
| HI | Hawaii (postal Symbol) |
| HSC | High School Certificate (as Used In New South Wales) |
| AZ | Azerbaijani Language (ISO 639-1 Code) |
| CIPE | (European) Centre For International Political Economy |
| YO | Yoruba Language (ISO 639-1 Code) |
| 2.5G | Second-and-a-half-generation Mobile Telephone System |
| RTG | Radio-isotope Thermoelectric Generator Also Used For Rubber Tyred Gantry Crane |
| POR | Proposed Operational Requirement |
| TID | Target Identification -ter In Die (Latin |