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astronaut

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noun as·tro·naut \ˈas-trə-ˌnȯt, -ˌnät\

Simple Definition of astronaut

  • : a person who travels in a spacecraft into outer space

Source: Merriam-Webster's Learner's Dictionary

Full Definition of astronaut

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


ASTRONAUT Defined for Kids

astronaut

play
noun as·tro·naut \ˈa-strə-ˌnȯt\

Definition of astronaut for Students

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





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