| Acronym | Meaning |
| TESSA | Total Exhaust Solvent Scrubbing Apparatus |
| MASP-HMO | Mutual Additive Substituent Parameter-Hueckel Molecular Orbital |
| WPCR | Water Pollution Control Research (US EPA) |
| AWT | Advanced Wastewater Treatment |
| ASW | Amorphous Solid Water |
| IRGCHAZ | Intercritically Reheated Grain-coarsened Heat-affected Zone |
| AMBR | Anaerobic Migrating Blanket Reactor [for Wastewater Treatment] |
| NVSS | NRAO VLA Sky Survey |
| FDM | Finite-difference Method |
| OEO | Overlap-enhanced Orbital |