| Acronym | Meaning |
| GRC | Greece (ISO 3166 Trigram) |
| MATREX | Modeling Architecture For Technology |
| FLA | Florida -Front Line Assembly - Future Large Aircraft |
| CAM | Chemical Agent Monitor - Computer-Aided Manufacturing |
| TM! | Tenchi Muyo! |
| GHB | Gamma-HydroxyButyrate |
| PG | Petagram |
| DU | Depleted Uranium -Dust (METAR Code) |
| HSPH | Harvard School Of Public Health |
| MLE | Maximum Likelihood Estimation |