| Acronym | Meaning |
| NVSS | NRAO VLA Sky Survey |
| PAWS | Portable Acoustic Wave Sensor |
| EUMAC | European Modeling Of Atmospheric Constituents |
| CCSDTQ | CCSDT (with) Quadruple (excitations) |
| LCAO LDA | LCAO-local Density Approxn. |
| PDE | Partial Differential Equation |
| PBMS | Particle Beam Mass Spectrometry |
| ELAP | Environmental Laboratory Accreditation Program |
| EMTIC | Emission Measurement Technical Information Center |
| CIHT | Configuration-interaction Hylleraas-type (wave Function) |