Definition of astronaut in English:



  • A person who is trained to travel in a spacecraft.

    • ‘American astronauts and Soviet cosmonauts shook hands hundreds of miles above a burning Cambodia.’
    • ‘The hostile environment of space poses a special challenge to the wellbeing of astronauts.’
    • ‘NASA permits astronauts to take some souvenirs for their family and close friends.’
    • ‘We can picture exactly what he meant because we have now seen film of astronauts orbiting the Earth in spacecraft.’
    • ‘I always really enjoy explaining how space travel works and how you train for a space mission as an astronaut.’
    • ‘This is an idea for a spacesuit that will allow astronauts to exercise while working in space.’
    • ‘The large viewing windows will provide the astronauts with a view of the Earth quite unlike any other.’
    • ‘How much food do we need to have on the spacecraft for the astronauts to go to Mars?’
    • ‘The findings are not only important for the wellbeing of astronauts but for everybody.’
    • ‘Iceland was where the Apollo 11 astronauts trained for their lunar trip.’
    • ‘For Earth will only be one point of light among many, and astronauts will truly be on their own.’
    • ‘The meeting was very informal and the girls were able to bombard Claudie with questions on what life is like as an astronaut.’
    • ‘During spaceflight astronauts lose muscle mass and function as a consequence of a lack of gravity.’
    • ‘For the astronauts on board the Space Station there are no less than sixteen sunrises and sunsets each day.’
    • ‘It will be the second time American astronauts return to Earth in a Soyuz spacecraft.’
    • ‘Every orbit of the space shuttle treats the astronauts to stunning scenery.’
    • ‘This is where astronauts are trained and the space shuttle program is managed.’
    • ‘When astronauts go into microgravity they lose their sense of place and have to rely on visual and auditory cues.’
    • ‘We salute his many accomplishments as an astronaut and as a husband and father.’
    • ‘It allowed American and Soviet astronauts to work together and to get to know each other.’
    • ‘It was also the first time that US astronauts had returned from space in a Soyuz spacecraft.’
    • ‘This is only a handful of some of the most notable men who helped to get American astronauts to the Moon.’
    spaceman, spacewoman, cosmonaut, space traveller, space pilot, space flyer, space cadet
    View synonyms


1920s: from astro-, on the pattern of aeronaut and aquanaut.