| Acronym | Meaning |
| CD | Centrifugal Decoupling Approximation (for Atom-mol.scattering) |
| CH-CI | Core Hole Configuration Interaction |
| PEDM | Perturbation Expansion (of The) Density Matrix |
| TPAD | Temperature-phased Anaerobic Digestion |
| FSR | Fractional Synthesis Rate |
| SPELEEM | Spectroscopic PhotoEmission And Low Energy Electron Microscope |
| NDP | Net Driving Pressure (in Membrane Reverse Osmosis) |
| RTPCR | Reverse Transcriptase Polymerase Chain Reaction |
| PSA | Pressure Sensitive Adhesive |
| MIC | Microwave Integrated Circuit |