| Acronym | Meaning |
| WAND | Waste Acceptance For Nonradioactive Disposal |
| SIPP | Sodium Iron Pyrophosphatepar |
| AETM | Analytical Electron Transmission Microscopy |
| CFRT | Continuous Fiber Reinforced Thermoplastic Composite |
| PIXIE | Polar Ionospheric X-ray Imaging Experiment |
| PP-MRD-CI | Pseudopotential-multireference Double Excitation-CI |
| HIMP | Heavy Ion Microprobe |
| IWG | International Working Group |
| IRMA | Immunoradiometric Assay |
| POA | Peierls-Onsager Approxn. (in Electronic Structure Calcns.) |