4K 4K /ˌfɔrˈkeɪ/

noun

1. (digital television and displays) a screen resolution with about 4000 horizontal pixels, e.g. a consumer 3840x2160 pixel screen  ( 4K )
   (digital television and displays) a screen resolution with about 4000 horizontal pixels, e.g. a consumer 3840x2160 pixel screen