| Acronym | Meaning |
| FBR | Fixed Bed Reactor |
| HHAP | Heavy Hydroaroms. From Petroleum |
| SCIT | Standing Committee On Information Technologies |
| DZDP | (double Zeta)-diffuse-polarization (basis Set In Configuration-mixing Mo Calcns. On Mols.) |
| CORC | Cooperative Online Resource Catalog |
| MPLS | Modified Partial Least Squares |
| NRW | Null Reflecting Water |
| SSUWP | Single Sided Universal Wet Processor |
| LIPOD | Laser Induced Photochemical Oxidative Destruction Process |
| ES | Energy Sudden (approxn. In Scattering Calcns.) |