| Acronym | Meaning |
| AURA | Association Of Universities For Research In Astronomy |
| CDEI | Centromere DNA Element I |
| ACCSA | Adiabatic Capture Centrifugal Sudden Approximation |
| HRC | Rockwell Hardness (C Scale) |
| HCI | Highly Charged Ion |
| AASIR | Advanced Atmospheric Sounding And Imaging Radiometer |
| CIT | California Institute Of Technology |
| ANPRM | Advance Notice Of Proposed Rulemaking |
| ECCM | Extended Coupled-cluster Method |
| QPT | Quantum Phase Transition |