| Acronym | Meaning |
| VSS | Volatile Suspended Solids |
| PEELS | Parallel Electron Energy Loss Spectroscopy |
| CET | Collisional Energy Transfer |
| PPMA | Parts Per Million Atomic |
| IGAC | International Global Atmospheric Chemistry |
| CMC | Ceramic Matrix Composite |
| IRP | Installation Restoration Program |
| LCEC | Liquid Chromatography With Electrochemical Detection |
| SMIE | Solid-metal-induced Embrittlement |
| ARS | Agricultural Research Service (US Dept. Of Agriculture) |