| Acronym | Meaning |
| PLO | Partially Localized Orbital |
| MDC | Minimum Detectable Concentration |
| HFRR | High Frequency Reciprocating Rig |
| LPS | Laser Plasma Spectroscopy |
| ASAXS | Anomalous Small-angle X-ray Scattering |
| ACR | Advanced Cracking Reactor (for Ethylene Production From Petroleum) |
| CCID | Confidential Chemicals Identification System |
| ECRIS | Electron Cyclotron Resonance Ion Source |
| TART | Tip-angle Reduced T1 Imaging |
| IRM | Isothermal Remanent Magnetization |