| Acronym | Meaning |
| SGA | Symmetric Group Approach |
| WOCE | World Ocean Circulation Experiment |
| VLF | Very Low Frequency (radiowaves) |
| PDFT | Perturbation Density-functional Theory |
| GLAST | Gamma-ray Large Area Space Telescope |
| ASDW | Axial Spin Density Wave |
| MIPMS | Microwave Induced Plasma Mass Spectrometry |
| GOEZS | Global Ocean Euphotic Zone Study |
| ICRMS | Ion Cyclotron Resonance Mass Spectrometry |
| IP | Impact Parameter Approximation |