cosmonaut

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noun cos·mo·naut \ˈkäz-mə-ˌnȯt, -ˌnät\

Definition of cosmonaut

  1. :  an astronaut of the Soviet or Russian space program

Origin and Etymology of cosmonaut

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


First Known Use: 1955


COSMONAUT Defined for English Language Learners

cosmonaut

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noun cos·mo·naut \ˈkäz-mə-ˌnȯt, -ˌnät\

Definition of cosmonaut for English Language Learners

  • : an astronaut in the space program of Russia or the former Soviet Union


COSMONAUT Defined for Kids

cosmonaut

play
noun cos·mo·naut \ˈkäz-mə-ˌnȯt\

Definition of cosmonaut for Students

  1. :  an astronaut in the space program of Russia or the former Soviet Union


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