| Acronym | Meaning |
| ARC | Arc-second Raster Chart - Association For Retarded Citizens - Appalachian Regional Commission |
| PDT | Pacific Daylight [Saving] Time (UTC-7 Hours) |
| AUC | Ab Urbe Condita / Anno Urbis Conditae (Latin From The Founding Of The City / In The Year Since The Founding Of The City) (of Rome) - Area Under The Curve (concentration Time Curve; Medicine) |
| JRDF | Joint Rapid Deployment Forces |
| VLIW | Very Long Instruction Word |
| SOCCSKSARGEN | South Cotabato |
| XVI | Sixteen (in Roman Numerals) |
| LOL | Laughing Out Loud (Internet Short-hand) |
| PL | Picolitre |
| BE | Beryllium |