| Acronym | Meaning |
| PNO-CE | Pseudonatural Orbital-configuration Expansion |
| RCO | Regenerative Catalytic Oxidizer |
| SH2 | Src-homology 2 |
| IBS | Ion Beam Sputtering |
| LOPAIR | Long Path Infrared |
| ESC | Environmental Stress Cracking |
| WFM | Work Function Microscopy |
| FIRF | Finite Impulse Response Filter |
| WSOC | Water-soluble Organic Carbon |
| MC-DWBA | Multichannel Distorted Wave Born Approxn. |