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.
Tidied into high definition, they often appear restless.
From Los Angeles Times • Sep. 3, 2025
He said the restaurant had installed high definition cameras "to boost security".
From BBC • Jul. 31, 2025
By the time they jumped the border and Devin turned pro in Tijuana at 17 years young, all with Money Mayweather’s blessing, you could see him lighting up local competition in high definition.
From Los Angeles Times • Dec. 3, 2023
Best extras: Sony provides a Blu-ray version of the film that contains an expansive amount of digital treats from the 2011 high definition release.
From Washington Times • Nov. 23, 2023
The colors of the Roman afternoon suddenly seemed sharper, as if the world had switched to high definition.
From "The Mark of Athena" by Rick Riordan
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.
