| Acronym | Meaning |
| MECI | Monoexcited Configuration Interaction |
| ZPL | Zero-phonon Line |
| MCDW | Matrix Continuum Distorted Wave |
| OER | Oxygen Enhancement Ratio |
| SCFX-CI | Excited-state Self-consistent Field Configuration Interaction |
| STP | Similarity Transformation (based) Perturbation (theory) |
| ESE | Extended-surface Electrolysis |
| NRW | Null Reflecting Water |
| IEMA | Immunoenzymometric Assay |
| SEI | Secondary Electron Imaging |