| Acronym | Meaning |
| POES | Polar Orbiting Environmental Satellites |
| LCAS MS | Linear Combination Of Atomic Spinors-molecular Spinors |
| SPA | Self-consistent Phonon Approximation |
| SCC | Sludge Conditioning Controller |
| NLDFT | Nonlocal Density Functional Theory |
| CAI | Conodont Alteration Index |
| TGTF | Trigonometric Gaussian-type Function |
| TSS | Total Suspended Solids |
| WELAC | Western European Laboratory Accreditation Cooperation |
| CCW | Constituent Concentrations In Waste |