| Acronym | Meaning |
| STS | Space Transportation System |
| EMACS | An On-line Text Editor Distributed As Part Of The GNU Package Of UNIX Software |
| OSF | Operational Support Facility |
| MPP | Massively Parallel Processor |
| AC | Ancho Canyon |
| ARR | Association For Radiation Research |
| NREL | National Resource Ecology Laboratory |
| UPO | UCAR Projects Office |
| MMM | Mesoscale And Microscale Meteorology |
| DMAIAGS | Defense Mapping Agency Inter-American Geodetic Survey |