Definition of astronomy in English:



mass noun
  • The branch of science which deals with celestial objects, space, and the physical universe as a whole.

    • ‘From his works we know that Kushyar was primarily an astronomer who wrote texts on astronomy and geography.’
    • ‘An inquiry into the effect of light pollution on astronomy was published last year.’
    • ‘Analysis was driven by the requirements of mathematical physics and astronomy.’
    • ‘In 1751 he went to the University of Utrecht to lecture on mathematics and astronomy.’
    • ‘He held university chairs in astronomy, physics and mathematics as well as working as an architect.’
    • ‘He studied physics as his main subject but took mathematics, astronomy and chemistry as minor subjects.’
    • ‘Topics other than mathematics also interested him, especially physics and astronomy.’
    • ‘This is an area of astronomy in which amateurs are able to make vital contributions to our knowledge base.’
    • ‘Newton, too, chose to work principally in the more traditional field of planetary astronomy.’
    • ‘One of the hallmarks of his spell as Astronomer Royal is his popularization of astronomy.’
    • ‘Secondly, astronomy is one of the few sciences in which the amateur can play a really useful role.’
    • ‘Padua was famous for its medical school and while he was there Copernicus studied both medicine and astronomy.’
    • ‘Supernovae are among the most spectacular phenomena known to astronomy.’
    • ‘Ancient India is also described as the original home of mathematics, astronomy and medicine.’
    • ‘Although he studied mathematics and astronomy at Cambridge, he was also interested in biology.’
    • ‘He made a number of contributions to mathematics, physics and astronomy.’
    • ‘Horrocks was educated at Cambridge, where he pursued his passion for astronomy and mathematics.’
    • ‘In addition to his mathematical work, Talbot also published on astronomy and physics.’
    • ‘Gergonne was appointed to the chair of astronomy at the University of Montpellier in 1816.’
    • ‘It was not only in mathematics and astronomy, however, that Newcomb made major contributions.’


Middle English (also denoting astrology): from Old French astronomie, from Latin astronomia, from Greek, from astronomos (adjective) ‘star-arranging’.