hd -abbr

  1. head

HD -abbr

  1. heavy-duty
  2. high-definition

HDL [,āch-(,)dē-'el] -n

  1. a lipoprotein of blood plasma that is composed of a high proportion of protein with little triglyceride and cholesterol and that is correlated with reduced risk of atherosclerosis called also good cholesterol

HDPE -abbr

  1. high-density polyethylene

HDTV -abbr

  1. high-definition television

hdwd -abbr

  1. hardwood