| Acronym | Meaning |
| CWTC | Chemical Waste Transportation Council |
| IMB | Information Management Branch |
| HL | Mustard-Lewisite Mixture |
| OU | Odor Units |
| FACOSH | Federal Advisory Council For Occupational Safety And Health |
| DISI | Direct-injection Spark-ignition |
| MSPO | Method Of Successive P |
| RHFO | Relativistic Hartree-Fock One-channel (for Scattering) |
| UCID | Unrestricted CI (with) Single (and) Double (excitations) |
| THFA | Target Hartree-Fock Approximation |