cosmonaut
noun
cos·mo·naut
ˈkäz-mə-ˌnȯt 
-ˌnät
: an astronaut of the Soviet or Russian space program
Examples of cosmonaut in a Sentence
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Thirty years ago, for example, Pepsi paid about $5 million to have a cosmonaut film a large Pepsi can replica outside the Mir space station.
—
Eric Berger, ArsTechnica, 20 May 2026
Once hatches are opened, the spacecraft will be unloaded by Crew 12 commander Jessica Meir and her three crewmates, pilot Jack Hathaway, European Space Agency astronaut Sophie Adenot and cosmonaut Andrey Fedyaev.
—William Harwood, CBS News, 15 May 2026
Irina’s head is spinning, but there’s no convincing former cosmonaut Lenya Polivanov not to do this.
—Sophie Brookover, Vulture, 15 May 2026
Then in July, NASA astronaut Anil Menon on his first spaceflight, will join Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina, flying on the Soyuz MS-29 mission launching from the Baikonur Cosmodrome in Kazakhstan.
—Richard Tribou, The Orlando Sentinel, 2 May 2026
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Eric Berger, ArsTechnica, 20 May 2026
Once hatches are opened, the spacecraft will be unloaded by Crew 12 commander Jessica Meir and her three crewmates, pilot Jack Hathaway, European Space Agency astronaut Sophie Adenot and cosmonaut Andrey Fedyaev.
—William Harwood, CBS News, 15 May 2026
Irina’s head is spinning, but there’s no convincing former cosmonaut Lenya Polivanov not to do this.
—Sophie Brookover, Vulture, 15 May 2026
Then in July, NASA astronaut Anil Menon on his first spaceflight, will join Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina, flying on the Soyuz MS-29 mission launching from the Baikonur Cosmodrome in Kazakhstan.
—Richard Tribou, The Orlando Sentinel, 2 May 2026
See All Example Sentences for cosmonaut
Cite this Entry
“Cosmonaut.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmonaut. Accessed 21 May. 2026.
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cosmonaut
noun
cos·mo·naut
ˈkäz-mə-ˌnȯt
-ˌnät
: a Soviet or Russian astronaut
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