HD

Look up hd in Wiktionary, the free dictionary.

HD may refer to:

Science and technology

• High-definition, in reference to high-definition video, high-definition television (HDTV), Intel High Definition Audio, or HD Voice
• 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
• 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.

Academia

• Handelshøjskolernes erhvervsøkonomiske Diplomuddannelse, a Danish evening course for a Graduate Diploma in Business and Administration
• 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

Places

• The HD postcode area, covering Huddersfield, Brighouse and Holmfirth in England, UK
• Heidelberg, Germany

People

• Hilda Doolittle, 20th century Ameican poet and novelist, known as H.D.
• Hilary Duff
• [Bernadette,Kriszianine,Kristel Rae,Raychelle Mary,Aira,Rhiza Lyne]

~Half Dozen~

Other

• Hit Dice, a statistic related to hit points, indicating role-playing game characters' health or durability
• Holocaust denial
• Humpty Dumpty, a nursery rhyme character

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