| Acronym | Meaning |
| QCFF/PI | Quantum Mechanical Consistent Force Field Method For Pi-electron Systems |
| BSCCO | Bismuth Strontium Calcium Copper Oxide |
| CMO | Canonical Molecular Orbital |
| BOO | Bond Orientational Order |
| ISE | Iterative Secular Equation (method For Solving The Schroedinger Equation) |
| UOP | Universal Oil Products |
| TCD | Thermal Conductivity Detector (for Gas Chromatography) |
| BSRS | Backward Stimulated Raman Spectrometry |
| INDO/2-HP | INDO/2-hole Potential |
| GT | Gas Turbine |