an astronaut, esp in the former Soviet Union
WordReference Random House Learner's Dictionary of American English © 2025
cos•mo•naut /ˈkɑzməˌnɔt, -ˌnɑt/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- Astronomya Russian or Soviet astronaut.
cos•mo•naut
(koz′mə nôt′, -not′),USA pronunciation n.
cos′mo•nau′tic, adj.
cos′mo•nau′ti•cal•ly, adv.
- a Russian or Soviet astronaut.
- cosmo- + (aero)naut, representing Russian kosmonávt 1955–60
cos′mo•nau′ti•cal•ly, adv.
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'cosmonaut' also found in these entries (note: many are not synonyms or translations):