| Acronym | Meaning |
| OAQPS | Office Of Air Quality Planning And Standards |
| BPC | N-butylpyridinium Chloride |
| NBO | Natural Bond Order |
| EWALD | Evanescent Wave Analysis With Laser Diodes |
| UTL | Upper Tolerance Limit |
| VAMO | Variational Alternant Molecular Orbital |
| CGA | Compressed Gas Association |
| DFB | Distributed Feedback |
| ESCPM | Electrochemical Scanning Probe Microscopy |
| HTHS | High-temperature High-shear |