| Acronym | Meaning |
| ATRS | Attenuated Total Reflection Spectroscopy |
| IDI | Ion Dipole Induced (potential Term In Potential Energy Surfaces) See Also LEPS-IDI |
| LIPOD | Laser Induced Photochemical Oxidative Destruction Process |
| FMO | Frontier Molecular Orbital |
| HPIAC | High-performance Immunoaffinity Chromatography |
| NAMA | National Air Monitoring Audits |
| PIMIA | Potentiometric Ionophore-modulation Immunoassay |
| BODC | Born-Oppenheimer Diagonal Correction (in Mol. Calcns.) |
| HLMI | High Load Melt Index |
| HCMOS | High-density Complementary Metal-oxide Semiconductor |