| Acronym | Meaning |
| PCMS | Process And Change Management System |
| AARADCOM | US Army Armanents R&D Command |
| LTER | Long Term Ecological Research |
| RAND OR RAND | Research And Development |
| AIAA | American Institute Of Aeronautics And Astronauts |
| MRI | Minority Research Initiation |
| MDDS | Maintenance Decision Support System |
| MM4 | Mesoscale Model |
| MOSES | Manned Open Sea Experiment Station |
| CCM5 | Community Climate Model 5 |