HD

From Wikipedia, the free encyclopedia

HD may refer to:

Contents 1 Science and technology 2 Role Playing Games (primarily Dungeons and Dragons): 3 Business 4 Medicine 5 Other

[edit] Science and technology

• Hard disk, or hard drive, a type of computer storage hardware (also HDD for hard disk drive)
• Henry Draper Catalogue, a sequential numbering system for stars ordered by right ascension
• High-definition as in video (HDTV) or audio
• High Density, in reference to a floppy disk, other magnetic media or the new optical format HD DVD.
• Hybrid drive, a type of notebook hard drive that utilizes a large buffer

[edit] Role Playing Games (primarily Dungeons and Dragons):

• Hit Dice how many dice of hit points your character has, an indication of his or her health and durability.

[edit] Business

• Harley-Davidson, an iconic American motorcycle manufacturer
• Home Depot, a chain of home improvement warehouse retailers

[edit] Medicine

• Attention-deficit hyperactivity disorder, known as Hyperactivity Disorder (HD), as in AD/HD
• Hodgkin's disease
• Hormone disruptor
• Huntington's disease
• HD, a human gene that makes a protein called huntingtin which plays an important role in Huntington's disease
• Hip Dysplasia

[edit] Other

• Higher Diploma, an academic award.
• Hilary Duff, a music artist.
• Hokkaido International Airlines (also known as Air Do), IATA airline designator
• Hilda Doolittle, also known as H.D., American poet
• Mustard gas
• Harmonization Document, a normative document in the European Union