| Acronym | Meaning |
| ALI | Annual Limit On Intake |
| SPIRES | Stanford Physics Information Retrieval System |
| DXF | Data Exchange Format |
| MPI | Message Passing Interface |
| APR | Aberdeen Pulsed Reactor Facility |
| RAMS | Random Access Measurement System |
| AIS | Affiliate And Immigration Services |
| ABRES | Advanced Ballistic Re-entry System |
| LTLOG | Landsat Technical Working Group |
| ITPR | Infrared Temperature Profile Radiometer |