astronaut

[as-truh-nawt, -not] / ˈæs trəˌnɔt, -ˌnɒt /

NOUN

space explorer

Synonyms

STRONGEST

cosmonaut pilot

WEAK

moonwalker rocket scientist rocketeer space person star person

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Canadian astronaut Jenni Gibbons was at the heart of NASA's control room in Houston on Monday, supporting her Artemis II crewmates remotely during their flight around the Moon.

From Barron's • Apr. 7, 2026

We also saw the debut of Poetic Kinetics’ “Escape Velocity,” a.k.a. the Coachella astronaut, and the mirrored “Reflection Fields” by Phillip K. Smith among the festival’s major art installations.

From Los Angeles Times • Apr. 6, 2026

With communications re-established, astronaut Christina Koch said: "It's so great to hear the Earth again."

From BBC • Apr. 6, 2026

The iconic photograph taken by astronaut William Anders captured the bright blue Earth against the vast darkness of space, with the Moon's cratered surface in the foreground.

From Barron's • Apr. 5, 2026

She didn’t want to be an astronaut anymore.

From "A Heart in a Body in the World" by Deb Caletti