The meaning of the Acronym HDD is...

HDD is

• Heating Degree Days

More Meanings For HDD:

• Hard Disk Drive
• High Density Disk
• Hub Direct Display
• Hard Disk Drive
• Horizontal Directional Drilling
• Heat Degree Days
• Heating Degree Days
• High-Dose Dexamethasone
• Quantum Corporation
• Heavy Duty Dry
• Horizontal Directional Drill
• Hardware Design Document
• Hard Disk Drive
• Heavy Duty Diesel
• Howard Dwaine Dorough

HDD is also in:

• Drivers
• Famous
• Geology
• Hardware
• Hospitals
• Meteorology
• Military
• NYSE Symbols
• Products
• Transportation
• Unit Measures