| Acronym | Meaning |
| NIES | National Institute For Environmental Studies (Japan) |
| NCWQ | National Commission On Water Quality |
| FFIS | Federal Facilities Information System |
| RVCM | Residual Vinyl Chloride Monomer |
| ILTJ | Iodine-Laser Temperature Jump |
| GSZ | Green-Sellin-Zachor Model Potential (for Atoms) |
| MSC | Molecular Simulated Crystal Method (in Compton Profile Calcns.) |
| TEIL | Two-electron Ionization Ladder (wave Function) |
| TER | Total External Reflection |
| TKN | Total Kjeldahl Nitrogen |