cosmonaut
Americannoun
noun
Other Word Forms
Etymology
Origin of cosmonaut
1955–60; cosmo- + (aero)naut, representing Russian kosmonávt
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Vocabulary lists containing cosmonaut
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.
In March 1995 Valeri Polyakov, a Russian cosmonaut, returned to Earth after a record 14 consecutive months in space.
From The Wall Street Journal • Feb. 19, 2026
In November, Russian cosmonaut Oleg Artemyev -- who had long been planned to be a member of Crew-12 -- was suddenly taken off the mission.
From Barron's • Feb. 5, 2026
Fedyaev will make history as the first cosmonaut to fly twice on Dragon.
From Science Daily • Feb. 2, 2026
Fitting for an artist who once put himself through the physical rigors of cosmonaut training, the show feels like a dialogue between opposing forces — boundlessness and constraint, presence and absence.
From Los Angeles Times • Oct. 16, 2025
Elena trained with another cosmonaut, German/ESA astronaut Ulf Merbold, for a long stay at the Mir Space Station.
From "Women in Space" by Karen Bush Gibson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
