| Acronym | Meaning |
| NSPS | New Source Performance Standards |
| MCP2P | Multiconfigurational Particle-particle Propagator |
| RO | Reverse Osmosis |
| PW-LDA | Plane Wave-local Density Approxn. |
| TEC | Transport Emergency Card |
| ERFEN | Estudio Regional Del Fenomeno El Nino |
| MESP | Molecular Electrostatic Potential |
| ASNOM | Aperture Scanning Near-field Optical Microscopy |
| RPMI | Roswell Park Memorial Institute |
| END | Electron Nuclear Dynamics (method In Atomic And Molecular Scattering Calcns.) |