killer app
noun
Definition of killer app
: a computer application of such great value or popularity that it assures the success of the technology with which it is associated; broadly : a feature or component that in itself makes something worth having or using
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First Known Use of killer app
1988
KILLER APP Defined for English Language Learners
killer app
noun
Definition of killer app for English Language Learners
-
: an extremely valuable or useful computer program
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