| Acronym | Meaning |
| HTGR | High-Temperature Gas Reactor |
| FTICRMS | Fourier Transform Ion Cyclotron Resonance Mass Spectrometry |
| CCRMP | Canadian Certified Ref. Materials Project |
| OR | Odds Ratio |
| CAAA | Clean Air Act Amendments (of 1990) |
| PCR | Principal Component Regression |
| ZECSY | Zero-quantum Coherence Correlation Spectroscopy |
| NEBD | Nonequilibrium Brownian Dynamics |
| IDA | International Desalination Association |
| HMI | Hornbeck-Molnar Ionization (homonuclear Associative Ionization In At. Collisions) |