| Acronym | Meaning |
| ZRL | Zero Risk Level |
| SC-HL | Self-consistent Heitler-London |
| APS | American Physical Society |
| AQSM | Air Quality Simulation Model |
| BNF | Biological Nitrogen Fixation |
| CPED | Convergent Probe Electron Diffraction |
| ACSL | Advanced Continuous Simulation Language |
| PAIR | Patent Application Information Retrieval System |
| ELH | Egg-laying Hormone |
| BDTQ | Brueckner (with) Double |