| Abbreviation | Definition |
|---|---|
| DEG | Dimensional Electron Gas |
| DELVE | Data for Evaluating Learning in Valid Experiments |
| DEPA | Dynamic Elastic Properties Analyzer |
| DePAC | Detector Physics and Applications Center |
| DERDS | Deployable Electromagnetic Radiation Deflector Shield |
| DERDS | Deployed Electromagnetic Radiation Deflector Shield |
| DESY | Deutsches Elektronen Synchrotron |
| DEWL | Dual-Element Weak Link |
| DEXA | dual energy Xray absorptiometry |
| DF | Dry Friction |
| DFIR | Diffused Infrared |
| DFL | density functional theory |
| DFL | Distributed Feedback Laser |
| DFPT | Density Functional |
| DFS | Displaced Fermi Surface |
| DFTS | Dispersive Fourier Transform Spectrometry |
| DGT | Denier Gradient Technology |
| DGT | Discrete Group Transform |
| DH | Degree of Hardness |
| DHGB | Dark Hollow Gaussian Beams |