| Acronym | Meaning |
| ANO | Approximate Natural Orbital |
| GPMAS | Gas Phase Molecular Absorption Spectrometry |
| LCCO | Light Catalytic Cycle Oil |
| CTE | Charge-transfer Efficiency |
| IAVI | International AIDS Vaccine Initiative |
| AIRDAS | Airborne Infrared Disaster Assessment System |
| CPC | Compound Parabolic Concentrator (for Solar Collectors And Solar Cells) |
| AFEAS | Alternative Fluorocarbon Environmental Acceptability Study |
| IDF | International Dairy Federation |
| MSIP | Magnetron Sputtering Ion Plating |