| Acronym | Meaning |
 | QXRD | Quantitative X-ray Diffraction |
| ORU | In Orbit Replaceable Unit (spacecraft) |
| VLBA | Very Long Baseline Array |
| GHCN | Global Historical Climatology Network |
| ANG II | Angiotensin II |
| WPI | Whey Protein Isolate |
| CASARM | Chemical Agent Standard Analytical Reference Material |
| ATAS | Advance Technology Alert System |
| NHF | Nonrelativistic Numerical Hartree-Fock |
| IGSCC | Intergranular Stress Corrosion Cracking |
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