| Acronym | Meaning |
| PTM | Posttranslational Modification |
| SIM | Selected Ion Monitoring |
| MSSA | Methicillin-susceptible Staphylococcus Aureus |
| PPT | Parts Per Trillion |
| TNFSF | Tumor-necrosis Factor Superfamily |
| SCFX-CI | Excited-state Self-consistent Field Configuration Interaction |
| SNICS | Source Of Negative Ions By Cesium Sputtering |
| DIMET | Desorption Induced By Multiple Electronic Transitions |
| UPES | Ultraviolet Photoelectron Spectroscopy |
| MSA | Multivariate Statistical Analysis |