| Acronym | Meaning |
| CCDTL | Coupled-cavity Drift-tube Linac |
| HHG | High-order Harmonic Generation |
| ICSD | Inorganic Crystal Structure Database |
| FK | Fish Kill (file Within STORET) |
| FREMSAAS | Frequency Modulated Simultaneous Atomic Absorption Spectrometry |
| ITFW | Improved Thomas-Fermi-Weizaecker (model) |
| FPPC | Float Program Planning Committee |
| ACE | Atmospheric Collection Equipment |
| LIR | Limiting Infiltration Rate |
| ECOP | Electron Correlation Polarization (potential) |