| Acronym | Definition |
|---|
| SSDD➣Subsystem Design Description |
| SSDD➣System Segment Design Document |
| SSDD➣Same Stuff Different Day (polite form) |
| SSDD➣System/Software Design Document (National Interagency Resource Ordering and Status System) |
| SSDD➣Sunshine Daydream |
| SSDD➣System/Segment Design Document |
| SSDD➣System/Subsystem Design Description (MIL-STD-498) |
| SSDD➣Segment Design Document |
| SSDD➣Single Side Double Density (5.25" floppy disk) |
| SSDD➣System/Segment Design Document (DoD-STD-2167a) |
| SSDD➣Source Selection Decision Document |
| SSDD➣Super Sloppy Double Dare (TV show) |
| SSDD➣System Simulation and Development Directorate (US Army AMRDEC, RDECOM) |