| Abbreviation | Definition |
|---|---|
| GABA | Gamma Amino Benzoic Acid |
| GABA | Gamma Amino Butyric Acid |
| GAD | Glutamic Acid Decarboxylase |
| GAE | Gallic Acid Equivalent |
| GAE | Gallic Acid Equivalents |
| GAEE | Gallic Acid Ethyl Ester |
| GAG | GlycosAminoGlycan |
| GAI | Gibberellic Acid Insensitive |
| GaP | Gallium Phosphide |
| GAR | Glycine Arginine Rich |
| GASA | Gibberellic Acid Stimulated Arabidopsis |
| GAW | Gross Atomic Weight |
| GBA | Glucosidase Beta Acid |
| GBAP | Glucosidase, Beta Acid, Pseudogene |
| GBB | Gas Blow Back |
| GC3N4 | Graphitic Carbon Nitride |
| GCAT | General Chemistry Assessment Test |
| GCC | Ground Calcium Carbonate |
| GCCE | Green Chemistry Centre of Excellence |
| GCES | Green Chemistry Expert System |