as·tro·naut | \ˈas-trə-ˌnȯt, -ˌnät\

Definition of astronaut 

: a person who travels beyond the earth's atmosphere also : a trainee for spaceflight

Examples of astronaut in a Sentence

Recent Examples on the Web

The crew created a makeshift art gallery to hang their drawings and haikus, played board games and faked fancy Saturday-night dinners together with the same packaged foods astronauts on the International Space Station eat. Bruce Henderson, charlotteobserver, "Concord native flew space mission to an asteroid. Without leaving Houston.," 3 July 2018 Gosling was about to find out why even professional astronauts stuck to the time limit. Sarah Midkiff,, "Ryan Gosling Learns Fake Space Travel Is As Dangerous As The Real Thing In New Movie," 9 June 2018 Joining them were Rafer Johnson, the 1960 Olympic decathlon champion, the 1936 Olympic track star Jesse Owens and astronaut James Lovell. Alice George, Smithsonian, "For 50 Years, the Special Olympics Has Given Marginalized Superstars Center Stage," 10 July 2018 The 56-year-old gospel legend was inducted alongside diplomat Teta V. Banks, astronaut Jeanette J. Epps, activist Chantél Harris, and author Margot Lee Shetterly at the sorority’s biennial conference in Houston. Niki Mcgloster,, "The Quick Read: Beyonce, Oprah To Headline Global Citizen in South Africa," 9 July 2018 In 1971, Apollo 15 astronaut David Scott dropped a feather and a hammer simultaneously; the two hit the gray lunar dirt at the same time. Mike Wall, NBC News, "Einstein's theory of relativity passes its toughest test yet," 5 July 2018 Both are members of the Artist Committee for Gun Control, headed by former astronaut Col. Johnny Miller,, "Beatty booed at Candlestick Park," 28 June 2018 Among his first tweets was a bitter message toward Korp and another of her clients, fellow astronaut Terry Virts. Eric Berger, Ars Technica, "Buzz Aldrin returns to Twitter, sues his son and former manager," 23 June 2018 Mile 18 has a launch-pad in the north lane that could be used for astronaut training. John Schandelmeier, Anchorage Daily News, "It’s still springtime on the Denali Highway," 10 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astronaut.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of astronaut

1928, in the meaning defined above

History and Etymology for astronaut

astr- + -naut (as in aeronaut)

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Statistics for astronaut

Last Updated

10 Oct 2018

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Time Traveler for astronaut

The first known use of astronaut was in 1928

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More Definitions for astronaut



English Language Learners Definition of astronaut

: a person who travels in a spacecraft into outer space


as·tro·naut | \ˈa-strə-ˌnȯt \

Kids Definition of astronaut

: a person who travels beyond the earth's atmosphere : a traveler in a spacecraft

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Comments on astronaut

What made you want to look up astronaut? Please tell us where you read or heard it (including the quote, if possible).


a state of commotion or excitement

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