| Acronym | Meaning |
| MACS | Modified Atomic Charge Superposition (in Calcns. On Atom-surface Scattering Potentials) |
| IEAES | Ion Excited Auger Electron Spectroscopy |
| SAS | Surface-active Substance |
| ARXPD | Angle Resolved X-ray Photoelectron Diffraction |
| ALPS | Airborne Laser Polarization Sensor |
| WWEMA | Waste And Wastewater Equipment Manufacturers Association |
| ACPTQ | Approx. Coupled Pair (theory Cor. For Connected) Triple And Quadruple Excitations |
| ALPID | Analysis Of Large Plastic Incremental Deformation |
| SHM | Screened Hydrogenic Model (for Electronic Structure In Plasmas) |
| ADME | Absorption |