| Acronym | Meaning |
| EQA | External Quality Assessment |
| LSW | Localized Spherical Wave (in Electronic Structure Calcns.) |
| IRAS | Infrared Astronomy Satellite |
| USCE | US Army Corps Of Engineers |
| NPPC | Nuclear Power Plant Consultant |
| OTFT | Organic Thin-film Transistor |
| SMM | Solar Maximum Mission |
| MEP | Multiple Extraction Procedure |
| SDI | Silt Density Index |
| GIXS | Grazing Incidence X-ray Scattering |