cosmonaut

noun

cos·​mo·​naut ˈkäz-mə-ˌnȯt How to pronounce cosmonaut (audio)
-ˌnät
: an astronaut of the Soviet or Russian space program

Examples of cosmonaut in a Sentence

Recent Examples on the Web
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Perhaps not coincidentally, that’s the same year Russian cosmonaut Valentina Tereshkova became the first woman to venture into space. Christopher Knight, Los Angeles Times, 29 Oct. 2024 The Russian studied engineering at the Moscow Aviation Institute, graduating with a specialty in operating and repairing aircraft before his selection as a cosmonaut in 2018. Eric Lagatta, USA TODAY, 29 Sep. 2024 The duo will join five other astronauts and cosmonauts already onboard the orbiting lab, rounding out the Expedition 72 crew. Denise Chow, NBC News, 27 Sep. 2024 Instead, the Starliner came down without its crew on September 7 and Crew 9 was launched with just two passengers — Nick Hague and cosmonaut Alexander Gobrunov — on Sept. 28. William Harwood, CBS News, 25 Oct. 2024 See all Example Sentences for cosmonaut 

Word History

Etymology

Russian kosmonavt, from Greek kosmos + Russian -navt (as in aeronavt aeronaut)

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of cosmonaut was in 1955

Dictionary Entries Near cosmonaut

Cite this Entry

“Cosmonaut.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmonaut. Accessed 17 Nov. 2024.

Kids Definition

cosmonaut

noun
cos·​mo·​naut ˈkäz-mə-ˌnȯt How to pronounce cosmonaut (audio)
-ˌnät
: a Soviet or Russian astronaut

More from Merriam-Webster on cosmonaut

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