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

Some people may need a webcam for virtual meetings or online classes, while others may want a high-definition video stream for security purposes. —Bestreviews, Chicago Tribune, 5 Aug. 2025

Waymo enables autonomous vehicle operation through sensors, artificial intelligence, and detailed high-definition mapping. —Marley Malenfant, Austin American Statesman, 30 July 2025

The marine life park made a splash thanks to a one-of-a-kind ride, described here, which is set inside a sphere lined with high-definition LED screens. —Caroline Reid, Forbes.com, 28 July 2025

Today's high-definition, high-frame-rate TVs are a different story. —Kurt Knutsson, FOXNews.com, 28 July 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