hd

(television) Initialism of high definition (“1280×720 pixels”). [(uncountable) Enhanced picture quality on a TV or any other display.]

(computing) Initialism of hard disc, hard disk, or hard drive.

Initialism of Harley-Davidson. [An American manufacturer of motorcycles.]

Initialism of Home Depot. [A chain of home improvement warehouse stores which offer large quantities of raw materials and tools.]

Initialism of heavy duty. [(often attributive) Strenuous service.]

Initialism of high density.

(medicine) Initialism of hemodialysis. [(medicine) Dialysis that uses an extracorporeal apparatus to remove waste products from the blood in the case of kidney failure.]

(pathology) Initialism of Huntington's disease. [(pathology, neurology) A hereditary disorder of the basal ganglia that leads to progressive loss of motor coordination.]

(pathology) Initialism of Hodgkin's disease. [(oncology, pathology) Former name of Hodgkin's lymphoma.]

(pathology) Initialism of Hansen's disease. [(pathology) The disease leprosy, caused by infection by Mycobacterium leprae.]

(biochemistry) Initialism of homeodomain. [(biochemistry, genetics) A folded protein domain that binds to DNA and has a function in transcription]

Abbreviation of head. [(countable) The part of the body of an animal or human which contains the brain, mouth, and main sense organs.]