high definition
Americannoun
-
a system for screen display of images that are sharper and more detailed than normal, having many more than the standard number of scanning lines per frame: HD
Most TV shows are available in high definition.
-
an audio system that reproduces sound with a high degree of accuracy and clarity: HD
music recordings that use high definition.
-
an optical system that produces very sharp images. HD
Other Word Forms
- high-definition adjective
Etymology
Origin of high definition
First recorded in 1980–85
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.
Attracting millions of likes on social media, the images show the two bodies from unusual angles in glorious high definition.
From BBC • Apr. 5, 2026
Tidied into high definition, they often appear restless.
From Los Angeles Times • Sep. 3, 2025
Some 17 months later, Manthan was reborn in ultra high definition 4K.
From BBC • May 17, 2024
The set includes a director’s cut adding more than 10 minutes to the film in a remastered 4K presentation, and the theatrical cut presented in high definition on the Blu-ray disc.
From Washington Times • Nov. 23, 2023
This was beyond high definition; it was like watching reality.
From "Found" by Margaret Peterson Haddix
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
