| Acronym | Meaning |
| LSD-SCF | Local Superdirect-self-consistent Field |
| NPS | Nonpoint Source |
| DSDP | Deep Sea Drilling Project |
| OS | Overlapping Spheres (method) |
| SEHF | Spin-extended Hartree-Fock |
| OPA | Optical Parametric Amplifier |
| EACN | European Air Chemistry Network |
| ISD | Ion Stimulated Desorption |
| OIB | Ocean Island Basalt |
| DQT | Dissipative Quantum Tunneling (theory) |