| Acronym | Meaning |
| LTC | Long Term Costing |
| GA | Gallium - Gigaannum |
| PBT | PolyButylene Terephthalate |
| LK | Sri Lanka (ISO 3166 Digram) |
| PLAF | Product Line Architecture Framework |
| NORML | National Organization For The Reform Of Marijuana Laws (normal) |
| PRFG | Partial Fog (METAR Code) |
| LR | Lawrencium |
| SUI | Sonic User Interface |
| USDRE | (U.S.) Under-Secretary Of Defense For Research And Engineering (1978?1986) |