Usually means: Study and practice of spaceflight.
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We found 8 dictionaries that define the word cosmonautics:

General (7 matching dictionaries)
  1. cosmonautics: Merriam-Webster
  2. cosmonautics: Collins English Dictionary
  3. cosmonautics: Wiktionary
  4. cosmonautics: Infoplease Dictionary
  5. cosmonautics: Dictionary.com
  6. Cosmonautics: Wikipedia, the Free Encyclopedia
  7. cosmonautics: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. Cosmonautics: Encyclopedia

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Definitions from Wiktionary (cosmonautics)

▸ noun:  The activities of cosmonauts; Soviet/Russian astronautics.

Similar:
astrionics, cosmism, astronomics, space medicine, cosmicism, cosmochemist, astrogation, cosmographer, astrotechnology, astronomy, more...

Opposite:
earth sciences, geosciences

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Similar:
astrionics, cosmism, astronomics, space medicine, cosmicism, cosmochemist, astrogation, cosmographer, astrotechnology, astronomy, more...

Opposite:
earth sciences, geosciences



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