| Acronym | Meaning |
![](file.png) | GREAT-ER | Geog.-referenced Regional Exposure Assessment Tools For European Rivers |
![](file.png) | GRF | Growth Hormone Releasing Factor |
![](file.png) | GRGL | Groundwater Residue Guidance Level |
![](file.png) | GRHF | Generalized Restricted Hartree-Fock |
![](file.png) | GRI | Gas Research Institute |
![](file.png) | GRI | Geosynthetics Research Institute (Drexel University |
![](file.png) | GRID | Global Resources Information Database |
![](file.png) | GRIDS | Geographic Resources Information And Data System |
![](file.png) | GRIMM | Global/Regional Interhemispheric Mercury Model |
![](file.png) | GRIN | Graded Index |
![](file.png) | GRIN | Gradient Refractive Index |
![](file.png) | GRINDOL | Ghost (and) Rydberg INDO |
![](file.png) | GRINSCH | Graded-index Separate Confinement Heterostructure |
![](file.png) | GRIP | Greenland Ice Core Project |
![](file.png) | GRK | G Protein Coupled Receptor Kinase |
![](file.png) | GRM | Geopotential Research Mission (USA Satellite) |
![](file.png) | GRNN | Generalized Regression Neural Network |
![](file.png) | GRO | Gasoline-range Organics |
![](file.png) | GRP | Glass Reinforced Plastic |
![](file.png) | GRP | Gastrin-releasing Peptide |
![](file.png) | GRPA | Generalized Random-phase Approximation |
![](file.png) | GRRR | Graduated Response For Risk Reduction |
![](file.png) | GRVB | Generalized Resonating Valence Bond |
![](file.png) | GRWA | Generalized Rotating-wave Approxn. (in Energy Level Calcns.) |
![](file.png) | GS | Gelius-Siegbahn (MO Approxn.) |
![](file.png) | GSA | General Services Administration |
![](file.png) | GSA | Geological Society Of America |
![](file.png) | GSA | Generalized Sudden Approximation |
![](file.png) | GSA | Generator-state Approach (in Many-body Quantum Theory) |
![](file.png) | GSAC | Generalized Symmetry Adapted Cluster (theory) |
![](file.png) | GSAM | Generalized Standard Addition Method |
![](file.png) | GSAS | Generalized Structure And Anal. Software |
![](file.png) | GSC | Geological Survey Of Canada |
![](file.png) | GSCF | Generalized Self-consistent Field |
![](file.png) | GSCRF | Generalized Self-consistent Reaction Field |
![](file.png) | GSD | Geometric Std. Deviation |
![](file.png) | GSD | Glycogen Storage Disease |
![](file.png) | GSFC | Goddard Space Flight Center (of NOAA |
![](file.png) | GSGG | Gallium Scandium Gadolinium Garnet |
![](file.png) | GSH-PX | Glutathione Peroxidase |
![](file.png) | GSHV | Ground Squirrel Hepatitis Virus |
![](file.png) | GSI | Gesellschaft Fuer Schwerionenforschung |
![](file.png) | GSI | Gonadosomatic Index |
![](file.png) | GSJ | Geological Survey Of Japan |
![](file.png) | GSK | Glycogen Synthase Kinase |
![](file.png) | GSM | Global System For Mobile Telecommunications |
![](file.png) | GSMBE | Gas Source Molecular-beam Epitaxy |
![](file.png) | GSMO | Ground-state Molecular Orbital |
![](file.png) | GSMT | Giant Segmented Mirror Telescope |
![](file.png) | GSNO | Ground-state Natural Orbital |