| Abbreviation | Definition |
|---|---|
| DI | Dielectric Isolation |
| DI | Direct Input |
| DIA | Direct Input Amplifier |
| DIB | Windows or OS/2 DIB image format |
| DIC | Differential Interference Contrast |
| DIC | digital inverter compressor |
| DICE | DARPA Initiative in Concurrent Engineering |
| DICE | Discrete Integrated Circuit Emulator |
| DICE | Dolby Interactive Content Encoder |
| DIEC | Dual Identity Electronic Contact |
| DIL | Dual InLine |
| DIM | Data Information Record |
| DIMM | Dual-In-line Memory Module |
| DIMU | Digital Inertial Measurement Unit |
| DI-NOLM | Dispersion-Imbalanced Non-linear Optical Loop Mirror |
| DIP | Dual Inline Package |
| DISU | Dual Input Switching Unit |
| DIT | Digital Instrumentation Technology |
| DITTO | Direct Input Tube Transformer Output |
| DITTO | Direct Interface Tube Transformer Output |