| Acronym | Meaning |
| NASC | North American Shale Composite |
| ORD | Office Of Research And Development (USEPA) |
| OPPIS | Optically Pumped Polarized Ion Source |
| MDW | Multichannel Distorted Wave (Born Approxn.) |
| VPO | Vapor Pressure Osmometry |
| UPA | Unitary-pole Approximation |
| ENAA | Epithermal Neutron Activation Analysis |
| DDRPA | Double Direct Random Phase Approximation |
| AQMP | Air Quality Management Plan |
| GVB-MDSA | Generalized Valence Bond-molecular Dynamics Simulated Annealing |