Dictionary

astronaut

noun as·tro·naut \ˈas-trə-ˌnt, -ˌnät\

: a person who travels in a spacecraft into outer space

Full Definition of ASTRONAUT

:  a person who travels beyond the earth's atmosphere; also :  a trainee for spaceflight
ADVERTISEMENT

Origin of ASTRONAUT

astr- + -naut (as in aeronaut)
First Known Use: 1929

Other Aeronautics/Aerospace Terms

airway, apron, corridor, dirigible, fishtail, flat-hat, vector
ASTRONAUT Defined for Kids

astronaut

noun as·tro·naut \ˈa-strə-ˌnt\

Definition of ASTRONAUT for Kids

:  a person who travels beyond the earth's atmosphere :  a traveler in a spacecraft

Browse

Next Word in the Dictionary: astronauticsPrevious Word in the Dictionary: astronAll Words Near: astronaut
ADVERTISEMENT
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears