| Acronym | Meaning |
| DRPA | Direct Random Phase Approximation |
| WLF | Williams-Ferry-Landel [viscosity Math. Relation/parameter] |
| CEQ | Collinear Exact Quantum (method In Reactive-scattering Calcn.) |
| ZRPA | Zero-radius Potential Approximation |
| SEP | Stimulated Emission Pumping |
| UPF | UV Protection Factor |
| HTTP | Hypertext Transfer Protocol |
| AAGP | Aerobic Attached Growth Process |
| MIIT | Materials Interface Interactions Test |
| ACM | Asbestos Containing Material(s) |