| Acronym | Meaning |
| MODR | Microwave Optical Double Resonance |
| ICZ | Initial Contact Zone(s) |
| ERCC | Excision Repair Cross-complementing |
| PID | Photoionization Detector (gas Chromatography) |
| MIAM | Modified Independent-atom Model (for Electron-mol. Scattering) |
| MSMO | Multiple Scattering Molecular Orbital Method (also Known As X(alpha) Scattered-wave) |
| EGO | Exhaust Gas Oxygen |
| WIG | W-inert Gas Welding |
| MOR | Modulus Of Resilience |
| EMBO | European Molecular Biology Organization |