| Acronym | Meaning |
| HTLA | Heat-treatable Low Alloy (steel) |
| PAX | Photoemission Of Adsorbed Xenon |
| GE-EPMA | Grazing-exit Electron Probe Microanalysis |
| PQCD | Perturbative Quantum Chromodynamics |
| AICS | Australian Inventory Of Chemical Substances |
| NGPSA | Natural Gas Pipeline Safety Act |
| BAL | Blood Alcohol Level |
| ARROW | Anti-resonant Reflecting Optical Waveguide |
| ACTH | Adrenocorticotrophic Hormone (reg:9003-56-9) |
| EDRF | Endothelium-derived Relaxing Factor |