| Acronym | Meaning |
| MIR | Mid Infrared |
| VCC-RIOS | Vibrational Close-coupled-rotational Infinite Order Sudden |
| PEPECO | Photoelectron-photoelectron Coincidence |
| DCBX | Distorted Coulomb-Born Exchange Approxn. |
| NHO | Natural Hybrid Orbital |
| ECMCAD | Extracellular Matrix And Cell Adhesion Molecule |
| SOC | Semivolatile Organic Compound |
| OLMO | Orthonormal Localized Mol. Orbital |
| EHT | Extended Hueckel Theory |
| LUST | Leaking Underground Storage Tank |