| Acronym | Meaning |
| MSM | Multiple-scattering Model |
| SCAP | Superfund Compliance Accomplishments Plan |
| CSMOS | Center For Subsurface Modeling Support |
| HSSPME | Headspace Solid-phase Microextraction |
| CAMM | Cumulative Atomic Multipole Moment (for Mol. Charge Distributions) |
| ARGOS | Automatically Represents Graphics Of Chemical Structures |
| IPPC | Integrated Pollution Prevention And Control |
| ERRD | Emergency And Remedial Response Division |
| LHRH | Luteinizing Hormone-releasing Hormone |
| QFEP | Quantum Free Energy Perturbation (calcn. Method) |