| Acronym | Meaning |
| ISE | Ion Selective Electrode |
| TIRFCS | Total Internal Reflection Fluorescence Correlation Spectroscopy |
| MQDT | Multichannel Quantum Defect Theory |
| RINDO | Rydberg Intermediate Neglect Of Differential Overlap |
| RVP | Reid Vapor Pressure (used For Gasoline Volatility) |
| SWICS | Solar Wind Ion Composition Spectrometer |
| HCF | High-cycle Fatigue |
| QSRR | Quantitative Structure-retention Relationships |
| AGI | American Geological Institute |
| PGNP | Prompt Gamma Neutron Probe |