| Acronym | Meaning |
| PBL | Planet Boundary Layer (in Atmospheric Chemistry And Physics) |
| LHSV | Liquid Hourly Space Velocity |
| EEF GTO | Electric Field Gradient Gaussian-type Orbital |
| APD | Antiphase Domain |
| IRRAS | Integrated Reliability And Risk Analysis System |
| NBS | Nucleotide-binding Site |
| HGMS | High Gradient Magnetic Separation (for Water Treatment) |
| BWR | Boiling Water Reactor |
| NSE | Neutron Spin Echo |
| HMM | Heavy Meromyosin |