| Acronym | Meaning |
| ERFEN | Estudio Regional Del Fenomeno El Nino |
| SLIME | Spin-locked Inversion Mid-echo |
| SAGFET | Self-aligned Gate Field Effect Transistor |
| OPPE | Office Of Policy |
| NAA | Neutron Activation Analysis |
| EFISPS | Electric Field Induced Surface Photovoltage Spectroscopy |
| REX | Relativistically Parametrized Extended Hueckel |
| LMSAL | Lockheed Martin Solar And Astrophysics Laboratory |
| DDAF | Dicretized Distributes Approximating Function (propagator |
| PCOS | Polycystic Ovary Syndrome |