| Acronym | Meaning |
| VLBI | Very Long Baseline Interferometry |
| ACJ | Artificially Constructed Junction (in Solar Cell Fabrication) |
| ADA | N-(2-acetamido) Iminodiacetic Acid |
| RDEQ | Reduced Dimensionality Exact Quantum (method For Reactive Scattering) |
| ORC | Origin Recognition Complex |
| DIC | Differential Interference Contrast |
| PFR | Plug Flow Reactor |
| HMM | Half Molecule Model (for Electron Scattering By Molecules) |
| PPI | Prepulse Inhibition |
| ARGOS | Advanced Research And Global Observation Satellite |