| Acronym | Meaning |
| APCA | Air Pollution Control Association |
| MLD | Metachromatic Leukodystrophy |
| REELM | Reflected Electron Energy Loss Microscopy |
| PBCSBR | Porous Biomass Carrier Sequencing Batch Reactor |
| WQCDS | Water Quality Criteria Documents |
| TEMO | Topological Effects On MO |
| WALTZ | Wonderful Alternating Phase Technique For Zero Residual Splittings |
| CCRSP | California Cooperative Remote Sensing Project |
| TFA | Total Fatty Acids |
| SC-SEA | Single-channel Static-exchange Approximation |