| Acronym | Meaning |
| CMDL | Climate Monitoring And Diagnostics Laboratory (NOAA Boulder |
| AODP | Advanced Ocean Drilling Program |
| CDRP | Carbon Dioxide Research Program (of US Department Of Energy) |
| PGSE | Pulsed Gradient Spin Echo |
| DTC | Developmental Test Command [US Army] |
| NECTAR | National Electronic Clinical Trials And Research |
| RPA | Random Phase Approximation |
| ZEKE | Zero Electron Kinetic Energy |
| NSRDS | National Standard Reference Data System |
| DET | Direct Nonradiative Electronic Energy Transfer |