| Acronym | Meaning |
| PGP | Previous Glacial Period (glacial Maximum Of O18 Stage 6; Predates The LGM) |
| PONA | Paraffins, Olefins, Naphthalenes, And Aromatics (in Petroleum Analysis) |
| ADH | Alcohol Dehydrogenase (reg: 9031-72-5) |
| ETEX | European Tracer Experiment |
| RBOT | Rotary Bomb Oxidn. Test |
| HCI | Highly Charged Ion |
| SATRAS | Satellite Transition Spectroscopy |
| GEOS | Goddard Earth Observing System |
| OSTE | One-step Temper Embrittlement |
| LOVA | Lowest-order Variational Approxn. (for Electron-phonon Interactions In Metals) |