| Acronym | Meaning |
| GYD | Guyana Dollar (ISO 4217 Currency Code) |
| FAC | Forward Air Controller - Front Of Allies For Change - Frontal Affinity Chromatography - Full Aperture Calibrator |
| CADPAT | CAnadian Disruptive PATtern |
| GED | General Education Development |
| BDS | #NAME? |
| MK | Air Mauritius (IATA Code) - Macedonia (ISO 3166 Digram; FIPS 10-4 Country Code) -Mandalskameratene (Norwegian Football Club) -Megakelvin -Missionary Kid - Mortal Kombat (game) |
| PWC | PieceWise Constant (describing A Mathematical Function) |
| AFM | Army Field Manual (UK; The U.S. More Frequently Uses Just FM) - Atomic Force Microscope - Aviation Fleet Maintenance |
| RC | See Entry |
| FSS | Fire Support Station |