HD: Difference between revisions

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{{wiktionary|H.D.|HD|hd.}}

'''HD''' may refer to:

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== Arts and media ==

* ''[[Hawaiian Dick]]'', a 2002 comic book

* ''[[Helsingborgs Dagblad]]'', a Swedish newspaper

* [[Hit Dice]], a statistic related to hit points, indicating role-playing game characters' health or durability

== Business ==

* [[Häagen-Dazs]], an ice cream brand

* [[Harley-Davidson]], a motorcycle manufacturer

* [[Hokkaido International Airlines]], an airline with IATA designator ''HD''

* [[The Home Depot]], a chain of home improvement retailers

==Science and technology==

=== Chemistry ===

* [[High-density polyethylene]], a high-density polyethylene plastic material seen in milk containers and various juice beverages

* [[Hydrogen deuteride]], a diatomic compound of hydrogen and deuterium

* [[Hyperdeformation]], extremely deformed atomic nuclei

* The chemical warfare agent [[sulfur mustard]], which in its distilled form is referred to as HD

=== Computing ===

* [[Hard disk]], a computer device which stores digitally encoded data, also known as 'hard drive' or 'hard disk drive'

* [[High density]], in reference to a floppy disk, other magnetic media or the optical formats HD DVD and Blu-ray Disc

* [[Hybrid drive]], a type of notebook computer hard drive that utilizes a large buffer

=== Medicine ===

* [[Hansen's disease]], an eponymous name for leprosy

* [[Hemodialysis]], a form of renal dialysis

* [[Hip dysplasia]]

* [[Hirschsprung's disease]], a disorder of the abdomen

* [[Hodgkin's disease]], a form of lymphoma

* [[Hormone disruptor]]

* [[Huntington's disease]], a genetic disorder affecting the central nervous system

** [[HD (gene)]], also called HTT or IT-15, which encodes huntingtin protein and causes Huntington's disease when abnormally expanded

* [[Hyperactivity disorder]], another name for attention deficit hyperactivity disorder (ADHD)

=== Other uses in science and technology ===

* '''High-definition''', in reference to:

** [[High-definition television]] (HDTV), a resolution that is substantially higher than that of standard-definition television

** [[High-definition video]], video of higher resolution and quality than standard-definition

** [[Intel High Definition Audio]], a specification for the audio sub-system of personal computers

** [[HD Voice]], or wideband audio

** [[HD Photo]], an image format

* [[HD Radio]], an abbreviation from the term hybrid digital/analog radio

* [[Henry Draper Catalogue]], an astronomical catalogue often used to designate stars

== People ==

* [[HDStarcraft]], American electronic sports shoutcaster

* [[H.D.]], the pen name of Hilda Doolittle (1886–1961), a 20th-century American poet and novelist

==Places==

* [[HD postcode area]], UK, covering Huddersfield, Brighouse and Holmfirth in England

* [[Heidelberg]], Germany, on vehicle registration plates

* [[Hunedoara County]], Romania

== Other uses ==

* [[Higher diploma]], an academic award

* [[National History Day]], an American history competition, somewhat similar to Science Fair

* [[Holocaust denial]], consists of claims that the genocide of Jews during World War II did not happen

== See also ==

* [[Heavy Duty (disambiguation)]]

* [[Hurter and Driffield]] (H&D), speed numbers, an old scale for measuring film speed

* {{lookfrom|HD}}

* {{intitle|HD}}

{{disambiguation}}