| Acronym | Meaning |
| SIC | Self-interaction Correction (in Exchange-energy Calcns.) |
| TSA | Temperature Swing Adsorption |
| ACIOSA | Adiabatic Capture Infinite Order Sudden Approximation |
| CHP | Chemical Hygiene Plan |
| PZEV | Partial Zero Emission Vehicle |
| SAM | Self-assembled Monolayer |
| AO | Atomic Orbital |
| AOT60 | Accumulated Ozone Exposure Above A Threshold Value Of 60 Ppb |
| SAFIR | Single Aperture Far-Infrared Observatory |
| IDEAL | International Digital Electronic Access Library |