Abbreviations beginning with h

HDROHigh Desert River Outfitters (rafting; Oregon)
Business

HDROHumanitarian Disaster Relief Operations
Governmental

HDROHerr Der Ringe Online (German: Lord of the Rings Online)
Miscellaneous

HDROHigher Degree Research Office (Macquarie University; North Ryde, New South Wales, Australia)
Miscellaneous

HDROHuman Development Report Office (UN)
Miscellaneous

HDRPHomeowner's Disaster Recovery Program (Harris County, TX)
Academic & Science

HDRPHeavy-Duty Rest Pads
Business

HDRPHealth Disparities Reduction Program (Michigan Department of Community Health)
Governmental

HDRPCAHigh Desert Region Porsche Club of America
Miscellaneous » Automotive

HDRPLAHereditary Dentato-Rubro-Pallido-Luysian Atrophy
Academic & Science

HDRRHigh Data Rate Receiver
Academic & Science

HDRRHigh Data Rate Recorder
Governmental » NASA

HDRRHIgh Dynamic Range Rendering
Governmental » NASA

HDRRHigh-Dynamic-Range Rendering
Miscellaneous » Unclassified

HDRRMHigh-Density Radiation-Resistant Microelectronics
Academic & Science

HDRSHigh Definition Recording System (product)
Business

HDRSHamilton Depression Rating Scale
Miscellaneous

HDRSHard Disk Recovery Services
Miscellaneous

HDRSHidden Data Recovery Services (Chicago, IL)
Miscellaneous