| Acronym | Meaning |
| SCPA | Single-site Coherent-potential Approximation (for Electronic Structure Calcns.) |
| QPEN | Quantum-mech. Potential (based On Interactios Of) Electrons (and) Nuclei |
| SGO | Spherical Gaussian Orbital |
| QRA | Quantitative Risk Assessment |
| CTF | Contrast-transfer Function |
| MMVF | Man Made Vitreous Fibers |
| FRAT | Free Radical Assay Technique |
| AACA | Ambient Atmosphere Conditions And Aging |
| FRCA | Fire Retardant Chemicals Association |
| RIDIRS | Resonant In-dip IR Spectroscopy |