| Acronym | Definition |
|---|
| HDAC➣Histone Deacetylase (biochemistry) |
| HDAC➣Huntington's Disease Advocacy Center (Stanford, CA) |
| HDAC➣House Democracy Assistance Commission (US House of Representatives) |
| HDAC➣Hydrogen/Deuterium Absorption Cell |
| HDAC➣Human Developmental Anatomy Center (National Museum of Health & Medicine; Washington, DC) |
| HDAC➣Helen Day Art Center (Stowe, VT) |
| HDAC➣Heavy Duty Air Cylinder |