| Acronym | Meaning |
| PPKTP | Periodically Poled KTiOPO4 |
| GIXRD | Grazing Incidence X-ray Diffraction |
| ISAST | Irreversible Sorption Affected Solute Transport [model] |
| CEPEX | Central Equatorial Pacific Experiment |
| EGCR | Experimental Gas-cooled Reactor |
| IISCI | Initial Ionic State Comfiguration Interaction |
| TBA | True Bicarbonate Activity |
| ELF | Electron Localization Function |
| RCS | Reaction Control System |
| DPCILO | Differential Perturbative Configuration Interaction Using Localized Orbitals |