| Acronym | Meaning |
| FRSS | Federal Register Search System |
| TSDIA | Two-scale Direct-interaction Approximation [in Flow Energy Modeling] |
| LAI | Leukocyte Adherence Inhibition |
| MP3 | Moeller-Plesset Third-order Perturbation Theory |
| ICHAZ | Intercritical Heat-affected Zone |
| OEAO | Overlap Enhanced Atomic Orbital |
| TSDRF | Treatment, Storage, Disposal, And Recycling Facilities |
| OHER | Office Of Health And Environmental Research (US Dept. Of Energy) |
| CD | Circular Dichroism |
| MVCD | Magnetic Vibrational Circular Dichroism |