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Synonyms

cosmonaut

American  
[koz-muh-nawt, -not] / ˈkɒz məˌnɔt, -ˌnɒt /

noun

  1. a Russian or Soviet astronaut.


cosmonaut British  
/ ˈkɒzməˌnɔːt /

noun

  1. an astronaut, esp in the former Soviet Union

"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

cosmonaut Cultural  
  1. A crew member of a space mission launched by the former Soviet Union.


Other Word Forms


Etymology

Origin of cosmonaut

1955–60; cosmo- + (aero)naut, representing Russian kosmonávt


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Vocabulary lists containing cosmonaut

Example Sentences

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The spacecraft was then hoisted onto a specialized ship, and the four occupants -- Meir, American Jack Hathaway, French astronaut Sophie Adenot and Russian cosmonaut Andrei Fedyaev -- were helped out one by one.

From Barron's ● Oct. 8, 2026

After entering the International Space Station, the Crew-13 astronauts and cosmonaut will complete a brief handover with members of NASA's SpaceX Crew-12 mission.

From Science Daily ● Sep. 30, 2026

In March 1995 Valeri Polyakov, a Russian cosmonaut, returned to Earth after a record 14 consecutive months in space.

From The Wall Street Journal ● Feb. 19, 2026

Control of the ISS has been handed over to Russian cosmonaut Sergey Kud-Sverchkov and two other crew members.

From BBC ● Jan. 14, 2026

Her cosmonaut training continued, and Irina was commissioned as an air force cosmonaut.

From "Women in Space" by Karen Bush Gibson

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