| Acronym | Meaning |
| CMR-CI | Contracted Multireference Configuration Interaction |
| NPRA | National Petroleum Refiners Association |
| NSIDC | National Snow And Ice Data Center (University Of Colorado) |
| WBC | White Blood Cell |
| FIIA | Flow Injection Immunoassay |
| CPDWB | Coulomb-projected Distorted-wave Born |
| AMO | Alternant Molecular Orbital |
| ODMR | Optically Detected Magnetic Resonance |
| PPP | Positron Polarization Potential |
| AWRG | Acid Waters Review Group (UK) |