| Acronym | Meaning |
| OEO | Overlap-enhanced Orbital |
| POL-CI | Polarization Configuration Interaction |
| GDA | Glow Discharge Atomization (for Atomic Absorption Spectrometry) |
| CXAES | Continuous X-ray-induced Auger Electron Spectroscopy |
| TACT | Trans Alaska Crustal Transect |
| CINDO | Closed Shell Intermediate Neglect Of Overlap Method |
| NAPRI | North American Pollutant Release Inventory |
| LOXJET | Liq. Oxygen Torch System |
| RECP | Relativistic Effective-core Potential |
| DPV | Differential-pulse Voltammetry |