| Acronym | Meaning |
| BAGI | Backscatter Absorption Gas Imaging |
| ARPA | Advanced Research Projects Agency |
| CSN-ICP | Conductive Solids Nebulizer-inductively Coupled Plasma |
| AVO | Average Virtual Orbital |
| PCS | Permit Compliance System |
| ARIPES | Angle-resolved Inverse Photoemission Electron Spectroscopy |
| AES | Atomic Emission Spectroscopy |
| BBFM | Bond-bending Force Model (for Phonon Calcns.) |
| SCAR | Scientific Committee On Antarctic Research |
| APU | Acid Purification Unit (acid Recovery System) |