| Acronym | Meaning |
| PEHX | Cross-linked |
| FOCSY | Foldover-corrected Correlation Spectroscopy |
| TNA | Thermal Neutron Analysis |
| RFG | Reformulated Gasoline |
| PACT | Powdered Activated Carbon Treatment |
| CSDP | Chemical Stockpile Disposal Program |
| AFP | Antifreeze Protein |
| LOEL | Lowest-Observed-Effect Level |
| PHF | Perturbative Hartree-Fock |
| CS | Coupled-states (or Centrifugal Sudden) Approximation |