| Acronym | Meaning |
| AMOS | Automatic Meteorological Observation System |
| PPP | Parallelizing PreProcessor |
| F | Fahrenheit |
| MVS/XA | Multiple Virtual Systems/Extended Architecture |
| ELCHEM | Electrified Clouds As Sources Of NOx |
| BWIP | Basalt Waste Isolation Project |
| CAS | Center For Automotive Safety |
| NOAO | National Optical Astronomy Observatories |
| GARP | GEMPAK Analysis And Rendering Program |
| PD | Positive Definite |