| Acronym | Meaning |
| ERIS | Electrochemically Regenerated Ion Suppressors |
| IRS | Internal Recognition Subsequence |
| NHL | Non-Hodgkin Lymphoma |
| COIL | Chem. Oxygen-iodine Laser |
| SCLC | Space Charge Limited Current |
| DISEP | Difference Integrated Spatial Electron Populations |
| ESW | Electroslag Welding |
| ECCF | Exchange Correlated Crystal Field |
| RCHF | Relaxed-core Hartree-Fock (approxn. In Calcns. On Mol. K-shell Excitation Spectra) |
| PINN | Proposed International Nonproprietary Names (for Drugs) |