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Definition of astronomy noun from the Oxford Advanced Learner's Dictionary

astronomy

noun
 
/əˈstrɒnəmi/
 
/əˈstrɑːnəmi/
 [uncountable]
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  1. the scientific study of the sun, moon, stars, planets, etc.
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    Topics Spaceb2
    Oxford Collocations DictionaryAstronomy is used after these nouns:
    • radio
    See full entry
    Word OriginMiddle English (also denoting astrology): from Old French astronomie, from Latin astronomia, from Greek, from astronomos (adjective) ‘star-arranging’.
See astronomy in the Oxford Advanced American DictionarySee astronomy in the Oxford Learner's Dictionary of Academic English
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