| Acronym | Meaning |
| OBAC | Office Of Budget And Control |
| GFLOPS | Gigaflops |
| GMD | Geometric Mean Diameter |
| EERU | Environmental Emergency Response Unit |
| FEMA | Federal Emergency Management Agency |
| SIGGRAPH | Special Interest Group On Graphics Of The Association Of Computing Machinery |
| TDL | Tunable Diode Laser |
| MSFE | Mechanisms Of Soil Formation And Evolution |
| CALTECH | California Institute Of Technology |
| EOL | Earth Observing Laboratory (formerly ATD) |