| Acronym | Meaning |
| 3A | Alumina Aluminide Alloys |
| SEC | Size Exclusion Chromatography |
| BIRD | Blackbody Infrared Radiative Dissociation |
| RPD | Retarding Potential Difference |
| HEN | High-efficiency Nebulizer |
| PEIS | Programmatic Environmental Impact Statement |
| PPV | Poly(phenylene Vinylene) |
| CNDO/2-FPP | Complete Neglect Of Differential Overlap With Finite Perturbation And Polarization |
| ANS | Autonomic Nervous System |
| HMSA | Hybrid Mean Spherical Approximation |