# cosmonaut

> English word · Noun · IPA /ˈkɒz.məˌnɔːt/ · frequency rank #52,241

## Definitions
1. An astronaut, especially a Russian or Soviet one.

## Etymology
Borrowed from Russian космона́вт (kosmonávt), from Ancient Greek κόσμος (kósmos, “universe”) + ναύτης (naútēs, “sailor”), may be decomposed as cosmo- + -naut.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/cosmonaut