| Acronym | Definition |
|---|
| HDAS➣Historical Dictionary of American Slang (Random House) |
| HDAS➣Health Dialog Analytic Solutions (Boston, MA) |
| HDAS➣Huddersfield and District Archaeological Society (UK) |
| HDAS➣Hydrographic Data Acquisition System |
| HDAS➣Help Desk Automation System |
| HDAS➣Hillingdon Design and Accessibility Statement (UK; land development) |