as·​tro·​nom·​i·​cal | \ ˌas-trə-ˈnä-mi-kəl How to pronounce astronomical (audio) \
variants: or less commonly astronomic \ -​mik How to pronounce astronomic (audio) \

Definition of astronomical

1 : of or relating to astronomy astronomical observations
2 : enormously or inconceivably large or great astronomical numbers an astronomical price

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Other Words from astronomical

astronomically \ -​mi-​k(ə-​)lē How to pronounce astronomically (audio) \ adverb

Examples of astronomical in a Sentence

The cost of the office building was astronomical. We got an astronomical telephone bill this month.

Recent Examples on the Web

Long seen as signifying growth and life, the astronomical event has an ancient history of being recognized as a special event in the calendar. National Geographic, "Summer solstice traditions from around the world," 20 June 2019 South Florida area codes consistently receive astronomical numbers of these fraudulent calls each year. Doreen Christensen,, "What cell carriers plan to do to aggressively block robocalls after FCC ruling," 7 June 2019 There’s also reason to be skeptical of these astronomical numbers. Jon Porter, The Verge, "Alibaba’s Singles Day sales dwarf Amazon’s biggest day," 12 Nov. 2018 Teams now spend this much on a player after one good season at a mid-table Premier League club, but in 2009 this fee seemed astronomical, yet entirely justified for one the world's best talents., "On This Day in 2009: Cristiano Ronaldo Signs for Real Madrid from Manchester United," 11 June 2019 Of particular interest is a yearly astronomical event called opposition, which occurs when Jupiter, Earth and the sun are arranged in a straight line. Kaitlyn Bancroft, The Know, "See Jupiter with your naked eye tonight during its “biggest and brightest” month," 10 June 2019 Photos of the astronomical event showed something strange: A few of the stars visible during the blackout were in the wrong place. Devin Powell, Discover Magazine, "How the 1919 Solar Eclipse Made Einstein the World's Most Famous Scientist," 24 May 2019 This phenomenon has been observed since ancient times and may be one of the earliest astronomical observations in human prehistory. Tom Metcalfe, NBC News, "What is the summer solstice? The science behind the first day of summer," 20 June 2018 Copies of Kendall's My Phantom Prince have surfaced on Amazon and the prices are astronomical. Alexis Jones, Marie Claire, "Elizabeth Kendall's Ted Bundy Memoir Is the Inspiration Behind the New Netflix Film," 3 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astronomical.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of astronomical

1551, in the meaning defined at sense 1

History and Etymology for astronomical

see astronomy

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Statistics for astronomical

Last Updated

7 Jul 2019

Look-up Popularity

Time Traveler for astronomical

The first known use of astronomical was in 1551

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English Language Learners Definition of astronomical

: of or relating to astronomy
: extremely large


as·​tro·​nom·​i·​cal | \ ˌa-strə-ˈnä-mi-kəl How to pronounce astronomical (audio) \
variants: or astronomic \ -​ik \

Kids Definition of astronomical

1 : of or relating to astronomy astronomical research
2 : extremely or unbelievably large The cost was astronomical.

Other Words from astronomical

astronomically adverb an astronomically large amount

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Comments on astronomical

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