| Acronym | Meaning |
| IGCP | International Geological Correlation Program |
| TRE | Total Resource Effectiveness |
| DBL | Diffusive Boundary Layer |
| SVOC | Semivolatile Organic Compounds |
| ECCLS | European Committee For Clinical Laboratory Standards |
| SIP | State Implementation Plan |
| UNO | Unrestricted Natural Orbital |
| TBC | Two-beam Coupling |
| CSHO | Compliance Safety & Health Officer |
| AIM | Adiabatic Invariance Method (in Ion-mol. Reactions) |