1. 
   HDA
   Abbreviation for head disk assembly. On modern hard drives this is typically a sealed unit.
   Found op http://www.glossarycentral.com/data_recovery/hda.html
   
   
2. 
   HDA
   Head Disk Assembly
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   Hda
   Hydrodealkylation, this is the process used for making benzene from toluene. (Abbreviation).
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
4. 
   HDA
   Hawaii Dental Association
   Found op http://www.encyclo.co.uk/local/20895
   
   
5. 
   HDA
   Health Development Agency
   Found op http://www.encyclo.co.uk/local/20895
   
   
6. 
   HDA
   Hispanic Dental Association
   Found op http://www.encyclo.co.uk/local/20895
   
   
7. 
   HDA
   Holistic Dental Association
   Found op http://www.encyclo.co.uk/local/20895
   
   
8. 
   HDA
   Head Disk Assembly
   Found op http://foldoc.org/HDA
   
   
9. 
   HDA
   Hydrodealkylation, a process used for making benzene from toluene.
   Found op http://www.encyclo.co.uk/local/21049
   
   
10. 
    hda
    1) Term for any region of packed-together people
    Found op abbr.
    
    

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