| Acronym | Meaning |
| IPOD | International Phase Of Ocean Drilling |
| QDT | Quantum-defect Theory |
| CAICISS | Coaxial Impact Collision Ion Scattering Spectroscopy |
| BARF | Best Available Retrofit Facility |
| IPMA | Ion Probe Microanalysis |
| DOFS | Distributed Optical Fiber Sensing |
| DWBE | Distorted-wave Born (approxn. With) Exchange |
| CI | Configuration Interaction |
| DIIMFP | Differential Inverse Inelastic Mean Free Path |
| ECP | Estimated Critical Position |