| Acronym | Meaning |
| PP | Polarization Propagator |
| TSCATS | Toxic Substances Control Act Test Submissions Online Database |
| CCPA | Cluster Coherent Potential Approximation (for Electronic Structure Calcns.) |
| MW | Molecular Weight |
| DDM | 4,4'-diaminodiphenyl Methane |
| GPT | Generalized Pseudopotential Theory |
| ESEM | Electron Spin Echo Modulation |
| SCID | Severe Combined Immunodeficiency |
| MEV | Mink Enteritis Virus |
| CO | Crystal Orbital |