| Acronym | Meaning |
| RLMTO | Relativistic Linear Muffin-tin Orbital |
| NADC | National Animal Disease Center |
| ORPI | Off-resonance Proton Irradiation |
| WBC | White Blood Cell |
| NSTF | North Sea Task Force (multinational Organization) |
| BARC | Bhabha Atomic Research Center |
| DIA | Drug Information Association |
| DCFCI | Density-constrained Full-configuration-interaction |
| ECP | Eosinophil Cationic Protein |
| HMIX | Hazardous Materials Information Exchange |