astronaut
/ˈæstrənɔːt/·애스트로넛·noun
a person trained to travel in space
GreekCEFR A2
Root
astro- (star) + Greek 'nautēs' (sailor)
Greek astron (star) + nautēs (sailor) → English astronaut (1929, by analogy with aeronaut)
In a word
astro (star) + nautēs (sailor) = 'a sailor of the stars'. Coined in 1929 on the model of aeronaut (air-sailor). The same astro runs through astronomy, asterisk (little star), disaster (an evil-aligned star). The idea of navigating space was first painted with the old word "sailor".
Examples
The astronaut floated outside the station.
She wants to be an astronaut someday.
Astronauts train for years before launch.
Related
astronomyastronomicalasteriskdisasteraeronaut