cosmonaut
About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.


cos·mo·naut

noun \ˈkäz-mə-ˌnt, -ˌnät\

Definition of COSMONAUT

: an astronaut of the Soviet or Russian space program

Origin of COSMONAUT

Russian kosmonavt, from Greek kosmos + Russian -navt (as in aeronavt aeronaut)
First Known Use: 1955

Browse

Next Word in the Dictionary: cosmonautics
Previous Word in the Dictionary: cosmology
All Words Near: cosmonaut

Seen & Heard

What made you want to look up cosmonaut? Please tell us where you read or heard it (including the quote, if possible).

Name That Thing

Take Our 10-Question Quiz

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More