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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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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

The team is comprised of two Nasa astronauts, a Russian cosmonaut and a Canadian astronaut whose wife is expecting their third child two months into the mission.

From BBC ● Oct. 1, 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

Fedyaev will make history as the first cosmonaut to fly twice on Dragon.

From Science Daily ● Feb. 2, 2026

After the conclusion of a successful mission as the 53rd cosmonaut sent into space, Svetlana continued training.

From "Women in Space" by Karen Bush Gibson

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