American Dictionary

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Definition improvisation in American English

improvisation noun

noun
/ˌɪmprɑvɪˈzeɪʃ(ə)n/
1

a performance of a play or a piece of music in which the performer invents words or musical notes that they have not learned or prepared before

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2

things that you do or make using only what is available at the time, instead of what is most suitable

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Definition improvisation in American English