high-definition

adjective 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

high definition

noun
    • a program broadcast in high definition

First Known Use of high-definition

1981

in the meaning defined above

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HIGH-DEFINITION Defined for English Language Learners

high-definition

Definition of high-definition for English Language Learners

  • of a television : having a very clear picture and a wide screen


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