Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “killer app”

killer app

noun [C]     (also killer ap, killer application) IT
computer software that is very popular or useful , especially software that is the reason people buy certain computer systems , mobile phones , etc.: Mobile access to social networking sites is the next killer app .
a use for a particular technology that becomes extremely popular and is the reason people want that technology : At the time they thought that e-learning would be the killer app of the Internet .
(Definition of killer app noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of killer app

Definitions of “killer app” in other dictionaries

Translations of “killer app”

Word of the Day

tie the knot

to get married

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More