high-definition

adjective

high-def·​i·​ni·​tion ˈhī-ˌde-fə-ˈni-shən How to pronounce high-definition (audio)
: being or relating to an often digital television system that has either 720 or 1080 scan lines per frame and a wide-screen format
high definition noun
a program broadcast in high definition

Examples of high-definition in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The high-definition pictures of the USS F-1 were released after a group of interagency teams used cutting-edge deep-sea imaging technology during an expedition earlier this year, according to news release from the Woods Hole Oceanographic Institution. Stephen Smith, CBS News, 24 May 2025 Instead of portholes that don't get much beyond 10.7 by 18.4 in (27.2 by 46.7 cm) , the Phantom 3500 cabin has seamless, high-definition digital screens running not only on the port and starboard sides, but on the ceiling as well. David Szondy may 16, New Atlas, 16 May 2025 Not that rabbit ears and the age of digital and high-definition signals are made for one another. Tom Layberger, Forbes.com, 14 May 2025 Planned improvements to Kezar Stadium include a new natural grass field with modern irrigation, new seats, a state-of-the-art sound system, and a high-definition LED scoreboard. Bay Area News Group, Mercury News, 9 May 2025 See All Example Sentences for high-definition

Word History

First Known Use

1981, in the meaning defined above

Time Traveler
The first known use of high-definition was in 1981

Browse Nearby Words

Cite this Entry

“High-definition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/high-definition. Accessed 3 Jun. 2025.

Kids Definition

high-definition

adjective
: relating to or being a television with a more detailed and sharper picture than usual
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!