| Acronym | Meaning |
| HRATS | High-Rate Anaerobic Treatment Systems |
| IRES | Internal Ribosome Entry Site |
| REV | Ray Eigenvector (a Wave Function) |
| MASP-HMO | Mutual Additive Substituent Parameter-Hueckel Molecular Orbital |
| RFM | Relativistic Mean Field |
| KRIPES | K-resolved Inverse Photoemission Spectroscopy |
| MOEXP | Morse Oscillator Exponential Repulsion Potential |
| ECAMSI | Electron Configuration Analysis For Many-system Interactions |
| HFRSPT | Hartree-Fock Rayleigh-Schroedinger Perturbation Theory |
| PKS | Polyketide Synthase |