| Acronym | Meaning |
| MBRSPT | Many-body Rayleigh-Schroedinger Perturbation Theory |
| FID | Free Induction Decay (Fourier Transform Spectroscopy) |
| SCR | Spectral Collocation Representation (of Basis Sets) |
| LCDAO | Linear Combination Of Distorted Atomic Orbitals |
| WATCH | Working Group On Assessment Of Toxic Chemicals |
| IRAK | Interleukin 1 Receptor-associated Kinase |
| ANO | Average Natural Orbitals |
| SPEG | Solid Phase Epitaxial Growth |
| MCSCF | Multi Configuration Self Consistent Field |
| CFSS | Constant-final-state Spectroscopy |