| Acronym | Meaning |
| SOD | Sediment Oxygen Demand |
| IPPP | Iterative Pariser-Parr-Pople Method |
| AMSA | Association Of Metropolitan Sewerage Agencies |
| CCDW | Commensurate Charge-density Wave |
| MAP | Magnesium Ammonium Phosphate |
| BCP | Biphasic Calcium Phosphate |
| LCAO | Linear Combination Of Atomic Orbitals |
| ODSC | Oscillating Differential Scanning Calorimetry |
| WPCP | Water Pollution Control Plant |
| ABXP | Ab Initio Dv-x.alpha. Point Charge Approxn. (in Solid Surface Electronic Structure Calcn.) |