| Acronym | Meaning |
| AIMDSA | Ab Initio Molecular Dynamics Simulated Annealing |
| SSUWP | Single Sided Universal Wet Processor |
| LDPO | Linearly Driven Parametric Oscillator (model In Energy Transfer Calcns. In Mol. Collisions) |
| PPFD | Photosynthetic Photon Flux D. |
| PO | Projection Operator |
| PPH | Parts Per Hundred |
| FACOSH | Federal Advisory Council For Occupational Safety And Health |
| ATW | Accelerator Transmutation Of Waste (for Radioactive Waste) |
| RSSCT | Rapid Small-scale Column Test (of Granulated Activated Carbon) |
| ASEHF | Approximate Spin-extended Hartree-Fock |