| Acronym | Meaning |
| EEC | European Economic Community |
| FRC | Federal Radiation Council |
| R-Z RELATIONSHIP | R = Precipitation Rate |
| MPP | Massively Parallel Processor |
| CDRL | Contract Data Requirements List |
| NEDRES | National Environmental Data Referral System |
| IAG | International Association Of Geodesy |
| AQD | Air Quality Digest |
| ACV | At-completion Variance |
| IOS | Interplanetary Scintillation |