Definition of astronaut
: a person who travels beyond the earth's atmosphere; also : a trainee for spaceflight
Recent Examples of astronaut from the Web
That’s right, the powder form of the drink the astronauts took to the moon.
Heroes and Legends, Kennedy Space Center, Florida At Heroes and Legends, augmented reality brings holograms of astronaut royalty to life.
The beloved Pixar film about a toy cowboy named Woody, his boy Andy, and Andy's new astronaut toy Buzz Lightyear is over 20 years old but its story endures even now.
Description: Learn about animal spies, animal astronauts, presidential pets and conservation of habitats.
As the astronauts try to plant their footsteps on the moon, the Pazinskis are trying to put down footsteps toward the rest of their lives.
Anyone watching would have witnessed an odd sight: Eustace was wearing a bulky white space suit—the kind NASA astronauts wear.
The first group, the original Mercury 7 astronauts, was chosen in 1959.
U.S. astronauts haven’t launched from home soil since 2011.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astronaut'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of astronaut
astr- + -naut (as in aeronaut)
First Known Use: 1928See Words from the same year
ASTRONAUT Defined for English Language Learners
Definition of astronaut for English Language Learners
: a person who travels in a spacecraft into outer space
ASTRONAUT Defined for Kids
Definition of astronaut for Students
: a person who travels beyond the earth's atmosphere : a traveler in a spacecraft
Seen and Heard
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