astronaut Hear it!

astronaut definition

as·tro·naut (as′trə nôt′, -nät′)

noun

a person trained to make rocket flights in outer space

Etymology: < Fr astronaute: see astro- & aeronaut

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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