HD
Look up hd in Wiktionary, the free dictionary.
HD may refer to:
Science and technology
- High-definition, reference to:
- Hard drive, a computer device which stores digitally encoded data, also known as HDD
- Henry Draper Catalogue, an astronomical catalogue often used to designate stars
- High density, in reference to a floppy disk, other magnetic media or the optical formats HD DVD and Blu-ray Disc
- Homeopathic Doctor, a doctor whom practices homeopathy, also known as HD
- Hybrid drive, a type of notebook computer hard drive that utilizes a large buffer
- Hydrogen deuteride, a diatomic compound of hydrogen and deuterium
- HD Radio, an abbreviation from the term Hybrid Digital/analog radio
- HD Photo, an image format
- The chemical warfare agent sulfur mustard, which in its distilled form is referred to as HD
- Hyperdeformation, extremely deformed atomic nuclei.
- High-density polyethylene, a high-density polyethylene plastic material seen in milk containers and various juice beverages.
Academia
- Higher Diploma, an academic award
- National History Day, an American history competition, somewhat similar to Science Fair
Business
- Harley-Davidson, an iconic American motorcycle manufacturer
- Headphone Dust, a record label run by music artist Steven Wilson
- Hokkaido International Airlines, a Japanese low-cost airline with IATA designator HD
- Home Depot, a chain of home improvement warehouse retailers
Medicine
- Attention-deficit hyperactivity disorder, known as Hyperactivity Disorder (HD), as in AD/HD
- Hemodialysis
- Hip Dysplasia
- Hodgkin's disease
- Hormone disruptor
- Huntington's disease
- The HD gene, a historical name for the huntingtin gene, which can cause Huntington's disease when it has certain properties.
- Hansen's disease (leprosy)
People
- H.D. (Hilda Doolittle), 20th century American poet and novelist
Other
- The HD postcode area, covering Huddersfield, Brighouse and Holmfirth in England, UK
- Heidelberg (code used on German license plates)
- Hit Dice, a statistic related to hit points, indicating role-playing game characters' health or durability
- Holocaust denial
- Humpty Dumpty, a nursery rhyme character
- Hawaiian Dick, a comicbook
This disambiguation page lists articles associated with the title HD.
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