astronaut

A2 Topic:Space, Position & Direction

US /ˈæstɹəˌnɔt/ UK /ˈæstɹəˌnɔːt/ See IPA manual

noun Freq #7132

Meanings

1

noun
A person who is trained to travel and work in space.

The astronaut floated slowly outside the space station.

Thesaurus

Synonyms

1 noun · a person who is trained to... cosmonautspaceman

Word family

Forms astronauts

Derived forms actornautafronautastronautrixastronautteastronettechimponautfapstronautnastronautpara-astronauttouronaut

Related forms aeronautastronauticastronauticalastronauticscosmonauttaikonautvyomanaut

Etymology

From astro- + -naut. Coined from Ancient Greek ἄστρον (ástron, “star”) and ναύτης (naútēs, “sailor”).

ἄστρον Ancient Greek

View etymology graph ->

Topics

Space, Position & Direction

# astronaut

**Type:** Word
**Level:** A2
**Part of speech:** noun
**IPA (US):** ˈæstɹəˌnɔt
**IPA (UK):** ˈæstɹəˌnɔːt
**Frequency rank:** 7132

## Meanings
1. A person who is trained to travel and work in space.

## Examples
- The astronaut floated slowly outside the space station.

## Synonyms
- cosmonaut

## Derived Forms
- actornaut
- afronaut
- astronautrix
- astronautte
- astronette
- chimponaut
- fapstronaut
- nastronaut
- para-astronaut
- touronaut

## Related Forms
- aeronaut
- astronautic
- astronautical
- astronautics
- cosmonaut
- taikonaut
- vyomanaut

## Roots and Affixes
- Root: ἄστρον

## Etymology
From astro- + -naut. Coined from Ancient Greek ἄστρον (ástron, “star”) and ναύτης (naútēs, “sailor”).

## AI Etymology
Astronaut is from astro- plus -naut. Coined from Ancient Greek ἄστρον (ástron, “star”) and ναύτης (naútēs, “sailor”). The formation is semantically transparent: the parts remain visible, while the compound or affix fixes the grammatical role and narrows the modern meaning. In use as a noun, astronaut denotes a person who is trained to travel and work in space. The same word family continues in derived forms such as actornaut, afronaut, astronautrix, and astronautte and related entries such as aeronaut, astronautic, astronautical, and astronautics.

## Topics
- Space, Position & Direction

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astronaut

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