| Acronym | Meaning |
| OTEC | Open Tubular Electrochromatography |
| EAPFS | Extended Appearance-potential Fine-structure Spectroscopy |
| SAM | Scanning Auger Microscopy |
| PML | Polymer Multi Layer |
| SCRI | Steel Can Recycling Institute |
| MLD | Median Lethal Dose |
| EPA | Environment Potential Approach (in Electronic-structure Calcn.) |
| RPDWR | Revised Primary Drinking Water Regulations |
| EVA | Extravehicular Activity (related To Spacecraft) |
| EIT | EUV (extreme Ultraviolet) Imaging Telescope |