| Acronym | Meaning |
| VBR | Variational Basis Representation (in Quantum Calcns.) |
| DSMS | Depth-selective Moessbauer Spectroscopy |
| UPF | UV Protection Factor |
| ICAME | International Commission On Application Of Moessbauer Effect |
| CASARM | Chemical Agent Standard Analytical Reference Material |
| XRES | X-ray Emission Spectroscopy |
| ESD | Emission Standards Division |
| RXTE | Rossi X-ray Timing Explorer |
| DWDM | Dense Wavelength Division Multiplexing |
| NASQAN | National Stream Quality Accounting Network |