English

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Etymology

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Blend of astronaut +‎ nut

Noun

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astronut (plural astronuts)

  1. (slang) A person with an obsessive interest in astronomy.
    • 2023, You Cannot Kill the Root, Nathan Kuzack:
      He was an “astronut”, a lover of all things extraterrestrial. For him astronomy was so great a passion it bordered on obsession.