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• HD
  HD

  abbreviation

  high-definition; high definition.
• hd.
  hd.

  abbreviation

  hand.
• h.d.
  h.d.

  abbreviation

  (in prescriptions) at bedtime.
• hd
  hd

  abbreviation

  hand

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