| Acronym | Meaning |
| STA | Single-transition Approximation |
| TMR | Tunneling Magnetoresistance |
| NORA | National Occupational Research Agenda |
| MTTP | Maximum Total Trihalomethane Potential |
| RATM | Renormalized Average T-matrix (for D.-of-states Calcns.) |
| DRPA | Direct Random Phase Approximation |
| NRDA | Natural Resource Damage Assessment |
| LOMO | Lowest Occupied Molecular Orbital |
| AMS | Alpha Methyl Styrene |
| SNFC | Sulfonated Naphthalene-formaldehyde Condensates |