| Acronym | Meaning |
| ECPA | European Crop Protection Association |
| IVR | Intramolecular Vibrational Energy Redistribution |
| BOO | Bond Order Orbital |
| ABC | ATP-binding Cassette |
| QSSPC | Quasi-steady-state Photoconductance |
| MFE | Magnetic Field Effect |
| FOMBT | First-order Many-body Theory |
| CHIP | Chemical Hazard Information Profile(s) |
| MORTI | Mesopause Oxygen Rotational Temp. Imager |
| LGM | Last Glacial Maximum (most Recent Era Of Continental Glaciation; See Also PGP) |