| Acronym | Meaning |
| NADB | National Air Data Branch (US EPA) |
| ESFF | Extensible Systematic Force Field |
| NCC | Near-centerline Concn. |
| LDOS | Local Density Of States |
| DSITMS | Direct Sampling Ion Trap Mass Spectrometry |
| STO | Slater-type Orbital |
| CH-CI | Core Hole Configuration Interaction |
| SCA-QD-MBPT | Self-consistently Adapted (core Reference State) Quasidegenerate Many-body Perturbation Theory |
| EGD | Evolved Gas Detection |
| DAFLOW | Diffusion Analogy Flow [model] |