high-def

adjective
\ ˈhī-ˈdef \
variants: or less commonly hi-def

Definition of high-def 

: high-definition high-def TV high-def programming hi-def video

Other words from high-def

high-def or less commonly hi-def noun
watching the game in high-def

First Known Use of high-def

1983, in the meaning defined above

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The first known use of high-def was in 1983

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