| Acronym | Definition |
|---|
| HSDI➣High Speed Direct Injection |
| HSDI➣Herrin Software Development Inc. (est. 2003; Prestonsburg, KY) |
| HSDI➣Human Systems Dynamics Institute |
| HSDI➣High Speed Data Interface |
| HSDI➣High-Speed Digital Imaging (visualization technique) |
| HSDI➣Health Self-Determination Index (motivation measurement) |
| HSDI➣HCMC (Ho Chi Minh City) Society of Dental Implantology (Vietnam) |