| Acronym | Meaning |
| IPIRDW | Independent-process (and) Isolated-resonance (approxn. Using) Distorted Waves |
| HMM | Hidden Markov Model |
| IMPATT | Impact Avalanche Transit-time |
| FEMP | Free Of Empirical Parameters (e.g. |
| SCI | Stabilized Criegee Intermediate(s) |
| PTP | Protein Tyrosine Phosphatase |
| SRXFA | Synchrotron Radiation X-ray Fluorescence Analysis |
| GPT | Glutamic Pyruvic Transaminase |
| HKS | Hartree-Kohn-Sham (quantum Theory) |
| BERM | Biological And Environmental Reference Materials |