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
This late uncertainty is just the most recent twist for the SpaceX Crew-12 mission, which includes Americans Jessica Meir and Jack Hathaway, French astronaut Sophie Adenot and Russian cosmonaut Andrey Fedyaev.
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
And in 1987, a heart arrhythmia caused Soviet cosmonaut Aleksandr Laveykin to leave the Mir space station early.
From BBC ● Jan. 14, 2026
At 12:30 PM Moscow time, the Vostok 6 was launched into orbit, and Lieutenant Valentina Tereshkova became the fifth cosmonaut in space.
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.
