Definition of astronomical in US English:



  • 1Relating to astronomy.

    • ‘Although such reports are often discounted as meteor showers or astronomical phenomena, other sightings are not so easy to dismiss.’
    • ‘Of all of the astronomical objects, the Sun is the most important to human beings.’
    • ‘Al-Mahri used astronomical observations of the height of stars to determine the difference in latitude between two places.’
    • ‘To astronomers, a transit occurs whenever a small astronomical object passes in front of a larger one.’
    • ‘In astronomy he worked on making observations more precise by improving astronomical instruments.’
    • ‘Thus the core mystery is not yet solved: what kind of astronomical object could explode so catastrophically?’
    • ‘One of the most extraordinary buildings is a circular astronomical observatory.’
    • ‘He began correcting the errors in existing astronomical tables by making observations of the motion of the planets with a cheap telescope.’
    • ‘The celestial globe is an astronomical instrument used to measure the stars and the nature of the universe.’
    • ‘This material is not related to comets but rather to other astronomical bodies.’
    • ‘His interest in optics also fitted in with an interest in making astronomical observations.’
    • ‘The Moon could also become the principal astronomical observation platform in the solar system.’
    • ‘Neptune was the first to be detected as the result of an astronomical calculation rather than accidental observation.’
    • ‘From Lippershey, Galileo picked up the idea of building a telescope for astronomical research.’
    • ‘Eclipses result from the astronomical relationship between Earth, Moon and Sun.’
    • ‘In that year he corrected the calendar to bring it into line with his accurate astronomical observations.’
    • ‘By 1905, of course, astronomical observations had greatly improved due to photography.’
    • ‘The first known astronomical observations made by Galileo were carried out in 1604 for different reasons.’
    • ‘This discovery was of great importance to the astronomical world, but Hubble's greatest moment was yet to come.’
    • ‘A corollary of this is that, before Hipparchus, astronomical tables based on Greek geometrical methods did not exist.’
    • ‘Zach was now appointed as director of a new astronomical observatory to be built at Seeberg, Gotha.’
    celestial, planetary, stellar, astronomic, heavenly
    View synonyms
  • 2informal (of an amount) extremely large.

    ‘he wanted an astronomical fee’
    • ‘Not every company charges an astronomical rate, a massive arrangement fee and suggests a loan which extends to the next generation.’
    • ‘Centre forwards are match winners - they are the ones who spark bidding wars and attract the astronomical transfer fees.’
    • ‘If we agree to this, in a very short time fees will be at astronomical levels and we will have created a market in higher education.’
    • ‘Even some of the more hardened observers are stunned by the astronomical amounts of money that can be made.’
    • ‘Now the truth is that the government wants people to smoke, as the amount of tax that we pay on cigarettes in astronomical.’
    • ‘Such astronomical fees would put university beyond the reach of many.’
    • ‘It seems the pay is average but the workplace hazard allowance is astronomical.’
    • ‘The ornateness of the decoration and the skill of the band must have required an astronomical amount of money.’
    • ‘If you add all the money raised for cancer research each year, you will have an astronomical amount.’
    • ‘It is spending astronomical amounts of money, alienating allies and further antagonizing opponents.’
    • ‘A total of 15,200 workers have come to Britain this summer, some expecting to earn astronomical sums.’
    • ‘Next he went on to tell me how hard it was for him to pay the astronomical education fees for his daughter on the money he made as a taxi driver.’
    • ‘To my advantage was the fact I wouldn't cost an astronomical fee.’
    huge, enormous, very large, very great, very big, prodigious, tremendous, monumental, mammoth, colossal, vast, gigantic, massive, epic, monstrous, terrific, titanic, towering, king-sized, king-size
    View synonyms


Mid 16th century: via Latin from Greek astronomikos, from astronomia (see astronomy).