Definition

1. Noun:
   • A person trained to travel in a spacecraft: A cosmonaut is a professional who is specially trained to operate, command, or serve as a crew member on a spacecraft. The term is specifically associated with the space program of the former Soviet Union and, subsequently, Russia.

Usage Examples

• Noun:
  • Yuri Gagarin was the first cosmonaut to orbit the Earth.
  • The cosmonaut conducted experiments aboard the space station.

Advanced Usage

• The term "cosmonaut" is often used in historical or geopolitical contexts to distinguish space travelers from the Soviet/Russian program from those of other nations (e.g., American "astronauts" or Chinese "taikonauts").
  • The museum exhibit compared the training of American astronauts and Soviet cosmonauts in the 1960s.

Variants and Related Words

• Astronaut (n): The equivalent term used primarily by the United States and other Western nations for a person trained for spaceflight.
• Taikonaut (n): A term sometimes used for a Chinese space traveler.
• Spacefarer (n): A more general, less common term for someone who travels in space.

Synonyms

• Space traveler
• Space explorer

Related Phrases

• While "cosmonaut" itself is not typically part of phrasal verbs, it is central to compound terms like:
  • Cosmonaut training: The specialized program to prepare individuals for spaceflight.
  • Cosmonaut corps: The organized body of active cosmonauts.

Related Idioms

• There are no common idioms that feature the word "cosmonaut" specifically. Its usage is almost exclusively literal and professional.

Noun

1. a person trained to travel in a spacecraft
   • the Russians called their astronauts cosmonauts