high-definition

adjective

high-def·​i·​ni·​tion ˈhī-ˌde-fə-ˈni-shən 

: 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

The film reveals awe-inspiring cosmic vistas and glimpses of daily life in orbit, captured with 8K ultra-high-definition cameras. —Marcelo Cajueiro, Variety, 4 Oct. 2025

These ultra-modern jets, still in development, have eliminated traditional passenger cabin windows entirely, replacing them with virtual ones that display real-time views from high-definition cameras mounted around the aircraft’s exterior. —Mack Degeurin, Popular Science, 2 Oct. 2025

That development, Cosm Detroit, is a unique indoor venue for watching live sports and other events in ultra-high-definition TV. —Jc Reindl, Freep.com, 30 Sep. 2025

In high-performance audio and video applications, such as streaming devices, gaming consoles and high-definition cameras, precise clocking synchronizes data flow and prevents lag, buffering or dropped frames. —Markus Lutz, Forbes.com, 15 Sep. 2025

Word History

First Known Use

1981, in the meaning defined above

Rhymes for high-definition

• academician
• cycloaddition
• decomposition
• diagnostician
• disinhibition
• indisposition
• interposition
• juxtaposition
• mathematician
• metacognition
• metaphysician
• neurotransmission

Kids Definition

high-definition

adjective

: relating to or being a television with a more detailed and sharper picture than usual