| Acronym | Meaning |
| ESD | Employment Security Department |
| IDI | Instrumentation Development And Intercomparisons |
| SEM | Space Environment Monitor |
| IGC | International Geophysical Cooperation |
| DELNI | Digital Equipment Local Network Interconnect |
| HMES | Hough Mode Extensions |
| TCP | Transport Control Protocol |
| TAS | True Air Speed |
| APCA | Air Pollution Control Association |
| ACGIH | American Conference Of Governmental Industrial Hygienists |