| Acronym | Meaning |
| LSA | Local Space Approximation |
| ARAR | Applicable Or Relevant And Appropriate Standards, Limitations, Criteria, And Requirements |
| MASP-HMO | Mutual Additive Substituent Parameter-Hueckel Molecular Orbital |
| AWWARF | American Water Works Association Research Foundation |
| CZT | Cadmium Zinc Telluride |
| ARISE | Advanced Radio Interferometry Between Space And Earth |
| ART | Advanced Recycling Technologies |
| SETM | Statistical Electron Transfer Model (for Electron-exchange Collisions) |
| ROHF | Restricted Open-shell Hartree-Fock |
| EMPPL | Effluent Monitoring Priority Pollutants List |