| Acronym | Meaning |
| IOC | Inorganic Chemical |
| BOAW | Bond-order Alternation Wave |
| TDS | Total Dissolved Solids |
| WWTP | Wastewater Treatment Plant Or Process |
| MBS | Minimum Basis Set Wave Function |
| IGC | Inverse Gas Chromatog. |
| PD | Photoelectron Diffraction |
| RPA | RNase Protection Assay |
| OLPA | Orbital Local Plasma Approxn. (in Stopping Power Calcn. For Ions By Films) |
| MFI | Melt Flow Index [of Polymer] |