| Acronym | Meaning |
| AQSM | Air Quality Simulation Model |
| IASH | International Association Of Scientific Hydrology |
| DRTS | Data Relay And Tracking Satellite |
| DID | Data Item Description |
| APA | American Planning Association |
| GLRS | Geodynamics (or Geoscience) Laser Ranging System |
| TCI | Tropical Cyclone Initiation |
| LES | Large-eddy Simulation |
| MAN | Metropolitan Area Network |
| RA | Radio Active |