| Acronym | Meaning |
| MMD | Mass Median Diameter |
| IAPSO | International Association Of Physical Sciences Of The Ocean |
| AMAX | American Metals Climax |
| APCA | Air Pollution Control Association |
| FPS | Field Project Services |
| UNIDATA | University Data Interactive Computing And Communications Systems |
| DCA | Washington National Airport |
| EMDS | Emergency Management Decision Support System |
| F/P-INT | Fabry Perot Interferometer |
| AWF | Aging Waste Facility |