| Acronym | Meaning |
| U.N. | United Nations |
| NCES | National Center For Education Statistics |
| ENC | Eisenhower National Clearinghouse |
| AIRS | Aerometric Information Retrieval System (changed To AFS) |
| MIGA | Multilateral Investment Guarantee Agency |
| NCEH | National Center For Environmental Health |
| NHLBI | National Heart |
| ICAO | International Civil Aviation Organization |
| DLIS | Defense Logistics Information Service |
| NIST | National Institute Of Standards And Technology |