| Acronym | Definition |
|---|
| HEDD➣High Electric Demand Day |
| HEDD➣Harmonically Enhanced Digital Device (Crane Song) |
| HEDD➣Heidelberger Electronic Document Delivery |
| HEDD➣Hybrid Electric Drive Demonstrator (based on Bradley Fighting Vehicle) |
| HEDD➣Human Engineering Design Document |
| HEDD➣High Energy Density Device |
| HEDD➣Hopeful Expected Due Date (pregnancy) |