What does HD stand for?

What does HD mean?

HD	Hardly Davidson Miscellaneous » Funnies
HD	High Detergent Miscellaneous » Food
HD	Henry Duncan Community » Famous
HD	Homeless Dog Miscellaneous » Dogs Related
HD	Hurter Driffield Academic & Science » Mathematics
HD	Harmonized Document Governmental » US Government
HD	A Half Degree Academic & Science » Academic Degrees
HD	Head Delegate Business » Positions
HD	Harmonised Document Computing » Software
HD	Hurter and Driffield Business » Firms
HD	Hodgkin's Disease (lymphoma) Medical » Oncology
HD	Hilary Doda Community » Famous
HD	Highest Divisor Academic & Science » Mathematics
HD	Holy Drumstick Miscellaneous » Funnies
HD	Hahnemannian Decimal Academic & Science » Mathematics
HD	Hard Disk Computing » Hardware
HD	High Density Computing » Hardware
HD	High Density Community » Media
HD	Heavy Duty Governmental » NASA
HD	Hopelessly Deaf Internet » Chat
HD	Hapori Dume, comic strip character Community » Famous
HD	Horrible and Detrimental Internet » Chat
HD	High Dollar Business » Accounting
HD	Highly Desirable Governmental » NASA
HD	Hoiddown Governmental » NASA