| Acronym | Meaning |
| DDF | Depth Distribution Function |
| PTSA | Pressure And Temperature Swing Adsorption |
| SPARS | Spatially Resolved Spectroscopy |
| SACF | Symmetry-adapted Configuration Function |
| STLS | Singwi-Tosi-Land-Sjolander (generalized Random-phase Approxn. For Effective Pair Potentials Of Liq. Metals) |
| DIN | Dissolved Inorganic Nitrogen |
| RKKY | Ruderman-Kittel-Kasuya-Yoshida (indirect Electron Exchange Mechanism) |
| GIABS | Gastro-Intestinal Absorptivity |
| IDLH | Immediately Dangerous To Life Or Health |
| ECCM | Extended Coupled-cluster Method |