| Acronym | Meaning |
| GIN | Guinea (ISO 3166 Trigram) -Guidelines International Network |
| CF | Californium |
| DSB | (U.S.) Defense Science Board |
| TACC | Tactical Air Control Centre - (USAF) Tanker Airlift Control Center |
| ELT | Emergency Locator Transmitter |
| OCI | Occitan Language (ISO 639-2 Code) |
| RRSP | Registered Retirement Savings Plan (Canada; Roughly Equivalent To The IRA In The U.S.) |
| TBT | Tributyltin |
| MDM | Michigan Dartmouth MIT Telescope Consortium |
| MIMOSA | MIcroMeasurements Of Satellite Acceleration |