high-def·i·ni·tion | \ ˈhī-ˌde-fə-ˈni-shən 
\
\Definition of high-definition
: being or relating to an often digital television system that has either 720 or 1080 scan lines per frame and a wide-screen format
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More Definitions for high-definition
high-definition
adjectiveEnglish Language Learners Definition of high-definition
of a television : having a very clear picture and a wide screen
See the full definition for high-definition in the English Language Learners Dictionary
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Time Traveler for high-definition
The first known use of high-definition was in 1981
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