HD

¹ American

abbreviation

high-definition; high definition.

channels that broadcast in HD;
HD video;
HD DVDs;
an HD display on my new tablet.
Computers. high definition.
Huntington's disease.

hd. ² American

abbreviation

hand.
head.

h.d. ³ American

abbreviation

(in prescriptions) at bedtime.

h.d. ⁴ American

abbreviation

heavy duty.

hd British

abbreviation

hand
head

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of h.d.

From New Latin hōra dēcubitūs

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Wegovy HD is a once-weekly injection that contains 7.2 milligrams of active ingredient semaglutide, which the company has said offers the highest weight-loss of any Wegovy injection so far.

From The Wall Street Journal • Jun. 8, 2026

You can stream in HD, make video calls and download large files without worry — though free servers do get busy during peak hours.

From Salon • Jun. 2, 2026

NVentures, the venture capital arm of Nvidia, and shipbuilder HD Hyundai are among other big backers.

From The Wall Street Journal • Apr. 23, 2026

For patients paying cash, Wegovy HD has a price of $399 per month.

From MarketWatch • Apr. 8, 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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023