| Acronym | Meaning |
| SIMCA | Soft Independent Modeling Of Class Analogy (principal Component Analysis) |
| SEVB | Semiempirical Valence Bond |
| MOST | Metal Oxide Semiconductor Transistor |
| SRCCSDT | Single-reference Coupled-cluster (with) Single (and) Double (and) Triple (excitations) |
| TMWAM | Turkey-Mersey Watershed Acidification Model |
| AIGER | American Industry Government Emissions Research Consortium |
| MP3 | Moeller-Plesset Third-order Perturbation Theory |
| CHO | Complex Harmonic Oscillator (in Mol. Scattering Theory) |
| LRAT | Lecithin-retinol Acyltransferase |
| GEMAP | Geocoded Emission Modeling And Projection |