| Acronym | Meaning |
| FNTS | Fast Neutron Transmission Spectroscopy |
| ECI | Size-extensive CI |
| NITS | National Institute Of Technology And Standards |
| EEM | Episodic Event Model (of Acidification) |
| CDFT | Chemical-density-functional Theory |
| FCCSET | Federal Coordinating Council On Science |
| AACE | American Association Of Coast Engineers |
| EDF | Electricite De France |
| DZ | Double Zeta (basis Set) |
| BPFT | Bohm-Pines-Fock-Tani (Hamiltonian In Calcns. On Plasmons) |