hd

1. abbreviationuncountableAbbreviation of head.

plural HDs

1. abbreviationcountableinitialismuncountablebroadcastingInitialism of high definition (“1280×720 pixels”).

   Exploring a new place through seasonal work was like “experiencing life in HD”, she said. “It really cemented the idea that the best way to learn about things is just to dive straight in and get as much information as possible, particularly at that age.”

   2024 October 7, Jem Bartholomew, “‘Doesn’t feel fair’: young Britons struggle with losing right to work in EU since Brexit”, in The Guardian

2. abbreviationcountableinitialismuncountablecomputingInitialism of hard disc, hard disk, or hard drive.

   Synonyms: HDD

3. abbreviationcountableinitialismuncountablebiochemistryInitialism of homeodomain.
4. abbreviationcountableinitialismuncountablemedicineInitialism of Hansen's disease.
5. abbreviationcountableinitialismuncountablemedicineInitialism of Hodgkin's disease.
6. abbreviationcountableinitialismuncountablemedicineInitialism of Huntington's disease.

   Huntington's disease (HD) patients are an anomaly with respect to contracting cancer, with 80% fewer cases than found in the general population.

   2018 February 12, “Huntington Disease siRNA a "Super-Assassin" of Tumor Cells”, in ClinicalOMICs

7. abbreviationcountableinitialismuncountablemedicineInitialism of hemodialysis.
8. abbreviationcountableinitialismuncountableInitialism of high density.
9. abbreviationcountableinitialismuncountableInitialism of heavy duty.

1. abbreviationinitialismInitialism of Harley-Davidson.
2. abbreviationinitialismInitialism of Home Depot.