| Acronym | Meaning |
| DNS | Direct Numerical Simulation |
| PIXET | Proton Induced X-ray Emission Tomography |
| ACE | Alternating Conditional Expectations |
| EAAS | Electrothermal Atomic Absorption Spectrometry |
| ETP | Environmental Tracking Procedure |
| ROFA | Rotating Over Fire Air (boiler Firing) |
| SUS | Saybolt Unit Seconds (viscosity Measurement) |
| TDO | Truncated Diatomic Orbital (a MO) |
| FV-MC-SCF | Full Valence Multiconfiguration Self-consistent Field |
| GEXRS | Grazing-exit X-ray Spectrometry |