| Acronym | Meaning |
| CLIA | Chemiluminescence Immunoassay |
| RAF | Reactivity Adjustment Factor |
| REA | Restriction Endonuclease Anal. |
| RGTO | Rheotaxial Growth And Thermal Oxidation |
| ORO | Office Of Regional Operations |
| ISC3 | Industrial Source Complex Version 3 |
| HELC | High Efficiency Liquid Chromatography (Russian |
| ACP | Approximate Coupled-pair (method For Correlation-energy Calcn.) |
| ACT | Alternative Control Technique |
| DFA | Dual Fouling Apparatus |