| Acronym | Meaning |
| QSI | Quantum Statistical Interference |
| RQCISD | (spin) Restricted QCISD |
| MCTDH | Multiconfigurational Time-dependent Hartree (theory) |
| CGRO | Compton Gamma-Ray Observatory |
| CPT | Critical Pitting Temperature |
| CTGF | Connective Tissue Growth Factor |
| AVT | Arginine Vasotocin |
| EVB | Empirical Valence Bond |
| FLASH | Fast Low-angle Shot (NMR Imaging) |
| ESE | Exact Static-exchange (approxn. In Scattering Calcns.) |