| Acronym | Meaning |
| PSD | Postsynaptic Density |
| HETG | High-energy Transmission Grating |
| MACSP | Marine Analytical Chemistry Standards Program |
| HMA | Hot Mix Asphalt |
| FAES | Flame Atomic Emission Spectroscopy |
| LRS | Laser Raman Spectroscopy |
| OMS | Octahedral Molecular Sieve |
| WANO | World Association Of Nuclear Operators |
| NISO | National Information Standards Organization |
| L2MS | 2-step Laser Mass Spectrometry |