astronaut (English)

Where does "astronaut" come from?

The word 'astronaut' is a modern compound coined from two Ancient Greek terms: 'astron', meaning 'star', and 'nautes', meaning 'sailor'. By combining these, the term literally describes a 'star-sailor', reflecting the adventurous spirit of space exploration. It elegantly bridges the ancient fascination with the night sky and the twentieth-century reality of traveling beyond Earth's atmosphere.

Full etymology tree

• astronaut (English), 'A member of the crew of a spaceship or other spacecraft that travels beyond Earth's atmosphere, or someone trained to serve that purpose.'
  • compound ἄστρον (ástron) (Ancient Greek), 'A celestial body:'
    • inherited ἀστήρ (astḗr) (Ancient Greek), 'a celestial body (star, planet, and other lights in the sky such as meteors).'
  • compound ναύτης (naútēs) (Ancient Greek), 'sailor, seaman'

Direct ancestors

• astro- (English)
• -naut (English)
• ἄστρον (Ancient Greek)

Updated July 2026

Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris