| Acronym | Meaning |
| RAL | Recommended Allowable Limit |
| PCDW | Projectile Continuum Distorted Wave (in Atom Collision Calcns.) |
| FOPIM | First Order Perturbation Iteration Method |
| SCLS | Surface Core Level Shift |
| FETI | Fire, Explosion And Toxicity Index |
| VPSEM | Variable Pressure Scanning Electron Microscope |
| SDS | Simulated Distribution System [for Water] |
| JJT | Josephson Junction Transistor |
| ACA | American Crystallographic Association |
| SAMPL | Selective Amplification Of Microsatellite Polymorphic Loci |