| Acronym | Meaning |
| AMS | Accelerator Mass Spectrometer |
| PEC | Performance Management Committee |
| ATMOS | Atmospheric Trace Molecules Observed By Spectroscopy |
| DAM | Data Access Management |
| ANS | Advanced Neutron Source |
| ZTD | Zenith Tropospheric Signal Delay |
| NCC | National Climate Center |
| OA | Office Automation |
| OPAL | Opacity Project At Livermore |
| SZOLD | Skewed Zeroth Order Logaorithmic Distribution Function |