| Acronym | Meaning |
| USGE | Ultrathin Slab Gel Electrophoresis |
| NBS | Nuclear Backscattering Spectroscopy |
| IRRAS | Integrated Reliability And Risk Analysis System |
| HWR | Heavy Water Reactor |
| SPDM | Single-particle Density Matrix |
| ABCM | Assembly (of) Boundary-controlled Monolayers (method For Electronic-structure Calcns.) |
| CNIE | Committee For The National Institute For The Environment |
| ESD | Equiv. Spherical Diam. |
| RMOS | Rotated Morse Oscillator Spline (function For Potential Surface Calcn.) |
| TOP | Trioctyl Phosphate |