HD - Definition

HD represents, among other things:

• The American poet Hilda Doolittle
• High Definition media formats, for instance HDTV (high definition television) or the HD-DVD format
• Hard disk or hard drive, a type of computer storage hardware
• Harley Davidson, an iconic American motorcycle manufacturer
• The Home Depot, a chain of home improvement warehouse retailers
  • Home Depot's ticker symbol on the New York Stock Exchange
• Hyperactivity Disorder, as in Attention-deficit hyperactivity disorder (AD/HD)
• High Density (in reference to a floppy disk or other magnetic media)
• The Henry Draper star catalogue