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Definition of astronaut noun from the Oxford Advanced Learner's Dictionary

astronaut

noun

/ˈæstrənɔːt/

/ˈæstrənɔːt/

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a person whose job involves travelling and working in a spacecraft
- sending astronauts into space
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Topics Spaceb1, Jobsb1
Word Origin1920s: from astro-, on the pattern of aeronaut and aquanaut.

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See astronaut in the Oxford Advanced American Dictionary

Check pronunciation: astronaut

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noun

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B2

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