| Acronym | Meaning |
| MET | Multichannel Eikonal Theory (in Atom Electron-impact Excitation) |
| NFP | Neurofilament Protein |
| G.P. | Guinier-Preston Zone |
| ETA | Electrothermal Atomization |
| MPC | Maximum Permissible Concentration |
| DIN | Direct Injection Nebulizer |
| AADO | Angular (momentum Conservation) Average Dipole Orientation Theory (in Io-mol. Reactions) |
| GAGP | Generalized Antisymmetrized Geminal Power (wave Function) |
| HID | High Intensity Discharge |
| OHEA | Office Of Health And Environmental Assessment (USEPA) |