| Acronym | Meaning |
| LADD | Lowest Acceptable Daily Dose |
| FASSST | FAst Scan Submillimeter Spectroscopy Technique |
| ASNT | American Society For Nondestructive Testing |
| QAPW | Quadratic Augmented Plane Wave (in Band-structure Calcn.) |
| HNBR | Hydrogenated Acrylonitrile-butadiene Rubber |
| SCF | Spherical Convergent Flap |
| DF-OCE | Dirac-Fock One-center Expansion |
| KFRP | Kevlar Fiber-epoxy Reinforced Plastic |
| ZCC | Zero Core Contribution (model For Photodetachment Calcns.) |
| MC-INDO | Mol. Cluster-intermediate Neglect Of Differential Overlap |