| Acronym | Meaning |
| TOSS | Total Suppression Of Sidebands |
| MTF | Multiple Tube Fermentation |
| ERFEN | Estudio Regional Del Fenomeno El Nino |
| OHEA | Office Of Health And Environmental Assessment (USEPA) |
| FMS | Frequency Modulation Spectroscopy |
| PRE | Proton Relaxation Enhancement |
| MM | Misch Metal |
| PCN | Polychlorinated Naphthalene |
| EFPVN | Eastern Fine Particle And Visibility Network |
| RCI | Relativistic Configuration Interaction |