Which country uses the term “cosmonaut” for its astronauts?

The term “cosmonaut” is used by Russia (formerly the Soviet Union) to describe individuals trained and certified for space travel. Derived from the Greek words “kosmos” (universe) and “nautes” (sailor), it literally means “sailor of the universe.” While Western nations such as the United States use the term “astronaut”, Russia has retained “cosmonaut” since the early days of its space program. Both refer to space travelers, but the terminology reflects cultural and national heritage. Russian cosmonauts are trained at Star City, near Moscow, at the Gagarin Cosmonaut Training Center, where they undergo intensive physical and technical preparation.