| Acronym | Meaning |
| SSER | Spinless Salpeter Equation (with) Retardation |
| ASA | Acrylonitrile-styrene-acrylate Terpolymer |
| ICAT | Isotope-coded Affinity Tag |
| PIXIE | Polar Ionospheric X-ray Imaging Experiment |
| ERE | Estrogen-responsive Element |
| COPW | Complete Orthogonalized Plane Wave |
| ADA | N-(2-acetamido) Iminodiacetic Acid |
| CAM | Crassulacean Acid Metabolism (photosynthetic Pathway) |
| RD/RA | Remedial Design/Remedial Action |
| SCHAZ | Subcritical Heat-affected Zone |