HD

¹ American  

abbreviation

1. high-definition; high definition.

   channels that broadcast in HD;

   HD video;

   HD DVDs;

   an HD display on my new tablet.

2. Computers. high definition.

3. Huntington's disease.

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hd. ² American  

abbreviation

1. hand.

2. head.

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h.d. ³ American  

abbreviation

1. (in prescriptions) at bedtime.

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h.d. ⁴ American  

abbreviation

1. heavy duty.

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hd British  

abbreviation

1. hand

2. head

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Etymology

Origin of h.d.

From New Latin hōra dēcubitūs

Example Sentences

This indicates HD is due for at least a dead cat bounce, if not something more significant:

From Barron's • Apr. 7, 2026

Under the best-in-class floodlights at Tottenham, the finale of Saracens v Northampton played out in HD technicolour compared to the relative gloom of Kingston Park and Exeter's win over Newcastle Red Bulls.

From BBC • Mar. 30, 2026

In Australia, Surfshark averaged 160 Mbps and NordVPN came in slightly lower at 150 Mbps, though both providers delivered stable performance suitable for HD and 4K streaming.

From Salon • Mar. 27, 2026

Its intermediate holding company HD Korea Shipbuilding & Offshore Engineering is also downgraded to neutral from buy, with its target price cut by 33% to 410,000 won.

From The Wall Street Journal • Mar. 20, 2026

Lindsey and Hassan talked about poker and zits and HD and DVR while Colin graphed his past.

From "An Abundance of Katherines" by John Green