| Acronym | Meaning |
| ESG | Electronic Specialty Gases |
| HPM | Hole-potential Model (in Calcn. Of Mol. Excited States) |
| GSGG | Gallium Scandium Gadolinium Garnet |
| MEMPT | Many-electron Many-photon Theory (in Dynamic-polarizability Calcns. For Atoms And Ions) |
| GID | Grazing Incidence Diffraction |
| FOREGS | Forum Of European Geological Surveys |
| FPXRF | Field Portable X-ray Fluorescence |
| MDR | Multidrug Resistance |
| ECVAM | European Center For The Validation Of Alternative Methods |
| NARSTO-NE-OP | North American Research Strategy For Tropospheric Ozone-Northeast Oxidant And Particle Study |