Definition of game changer noun from the Oxford Advanced Learner's Dictionary


game changer

BrE BrE//ˈɡeɪm tʃeɪndʒə(r)//
; NAmE NAmE//ˈɡeɪm tʃeɪndʒər//
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a person, an idea or an event that completely changes the way a situation develops The advent of the digital camera proved to be a game changer in the photography industry.
See the Oxford Advanced American Dictionary entry: game changer