| Acronym | Meaning |
| 4WM | Four Wave Mixing |
| INDOR | Internal Nuclear Double Resonance |
| CD | Coulomb Dipole (in Electron-atom Impact Ionization Calcns.) |
| UBD | Under-bath Decarburization |
| DTPA | Diethylenetriamine Pentaacetic Acid |
| SCIC | Single-column Ion Chromatography |
| BIV | Bovine Immunodeficiency Virus |
| HMPGI | Hybrid Multiple-prism Grazing-incidence |
| EEXAPS | Electron Excited X-ray Appearance Potential Spectroscopy |
| IMF | Interplanetary Magnetic Field |