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View synonyms for

astronaut

[ as-truh-nawt, -not ]

noun

  1. a person engaged in or trained for spaceflight.


astronaut

/ ˈæٰəˌɔː /

noun

  1. a person trained for travelling in space See also cosmonaut
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

astronaut

  1. A crew member of a space mission launched by the United States. ( See Apollo program and Mercury program .)
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Word History and Origins

Origin of astronaut1

1925–30; astro- + (aero)naut, probably via French astronaute; astronautical
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Word History and Origins

Origin of astronaut1

C20: from astro- + -naut from Greek Բܳŧ sailor, on the model of aeronaut
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Compare Meanings

How does astronaut compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

Examples have not been reviewed.

Steak, mashed potatoes and deserts for astronauts could soon be grown from individual cells in space if an experiment launched into orbit today is successful.

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King countered some of the negative comments, saying she believes the flight inspired young women who want to be astronauts.

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“You never see a man, a male astronaut, who’s going up in space, and they say, ‘Oh, he took a ride.’

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And during the Radio 1 Breakfast show, the businessman got in touch with Greg to suggest starting with an "astronaut experience" for the crew.

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Additionally, there are two support members referred to as Crew Member Seven: one provides continuous guidance to astronauts, while the other maintains communication from the control room during the mission.

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astron.astronautical