| Acronym | Meaning |
| GIAO | Gage-independent Atomic Orbital |
| SCOT | Shell Claus Off-gas Treating |
| CFD | Computational Fluid Dynamics |
| EK | Extended Koopmans (method In Ionization Potential Calcns.) |
| HMA | Hybrid Microelectronics Assembly |
| MUSIC | Multiplicity Selective In-phase Coherence Transfer |
| SDOSS | Sodium Dioctylsulfosuccinate |
| ICZ | Initial Contact Zone(s) |
| FRED | Flexible Regional Emissions Data System |
| BHRA | British Hydromechanics Research Association |