astronaut
UK[ˈæstrənɔːt]US[ˈæstrəˌnɔːt]
n
A person who is trained to travel and work in a spacecraft.
Morpheme Breakdown
astro
naut
astro
star
naut
sailor
Etymology
The word 'astronaut' is a modern English coinage, directly constructed from ancient Greek elements to describe a new profession. The first element, 'astro-', derives from the Greek astron (star), which itself traces back to the Proto-Indo-European root h₂stḗr (star). The second element, '-naut', comes from the Greek nautēs (sailor), related to naûs (ship) and the PIE root néh₂us (boat). Literally meaning "star sailor," the term logically evolved from its classical components to its contemporary abstract meaning: a person who navigates the vessel of a spacecraft through the starry expanse of space, paralleling ancient sailors navigating by the stars across the ocean.
Analysis
Structure: astro (star) + naut (sailor)
- astro: From Greek astron, meaning "star". In English, it functions as a combining form relating to stars, celestial bodies, or outer space.
- naut: From Greek nautēs, meaning "sailor". In English, it functions as a combining form meaning a traveler or voyager.
Examples
The astronaut conducted experiments aboard the International Space Station.
She trained for years to fulfill her dream of becoming an astronaut.
The veteran astronaut has logged over 300 days in space.