| Acronym | Meaning |
| RHEED | Reflection High-energy Electron Diffraction |
| APCI | Atm. Pressure Chem. Ionization |
| AMTEC | Alkali Metal Thermoelectric Converter |
| CSCM | Chemical Shift Correlation Map |
| SCI | Spinal Cord Injury |
| LFC | Load Frequency Control (battery Systems) |
| APAR | Absorbed Photosynthetically Active Radiation |
| OPPTS | Office For Prevention |
| ESC | Environmental Stress Cracking |
| PNDO | Partial Neglect Of Differential Overlap |