| Acronym | Meaning |
| GEOS | General Earthquake Observation System |
| PAGE | Polyacrylamide Gel Electrophoresis |
| ESIG | European Solvents Industry Group |
| PBSC | Peripheral Blood Stem Cell |
| CGRO | Compton Gamma-Ray Observatory |
| DIIS | Direct Inversion In The Iterative Space |
| EPRI | Electric Power Research Institute |
| GLIS | Global Land Information System |
| GLISP | Great Lakes International Surveillance Plan |
| HPDM | Hybrid Plume Dispersion Model (air Quality) |