as·​tro·​nom·​i·​cal ˌa-strə-ˈnä-mi-kəl How to pronounce astronomical (audio)
variants or less commonly astronomic
: of or relating to astronomy
astronomical observations
: enormously or inconceivably large or great
astronomical numbers
an astronomical price
astronomically adverb

Example Sentences

The cost of the office building was astronomical. We got an astronomical telephone bill this month.
Recent Examples on the Web In any luxury industry, though, the payoff for securing VIP clients, who can spend millions of dollars a year with a single company, is astronomical—and some sectors invest fortunes in wining and dining their heaviest hitters. Jill Newman, Robb Report, 20 Nov. 2022 His net worth is still astronomical – and enough to solidify his spot as richest man in the world — but Musk's worth was once larger. CBS News, 9 Nov. 2022 Pickova worries that their real electricity balance, due in December, will be astronomical. Nikol Mudrova, Fortune, 22 Oct. 2022 Labor protections have been badly diminished in the last several decades, and wages (particularly the minimum wage) have stagnated, even as corporations have recorded astronomical profits. Nicole Hemmer, CNN, 29 Oct. 2021 This is the next total lunar eclipse and is one of the best astronomical events to see with the naked eye. Dean Regas, The Enquirer, 3 Nov. 2022 One of falls' top astronomical events is taking place this dawn, the Orionid meteor shower. Taylor Wilson, USA TODAY, 21 Oct. 2022 In his book The Long Space Age, space economist Alexander MacDonald notes that of 38 US astronomical observatories built in the 1800s and early 1900s, 36 were funded and operated largely through private financing. Eric Berger, Ars Technica, 29 Sep. 2022 Their company is named after Chile’s stunning Atacama Desert, home to several astronomical observatories, including the ALMA, one of the largest radio telescopes in the world. Anna Marie De La Fuente, Variety, 16 Aug. 2022 See More

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.

Word History


see astronomy

First Known Use

1551, in the meaning defined at sense 1

Time Traveler
The first known use of astronomical was in 1551

Dictionary Entries Near astronomical

Cite this Entry

“Astronomical.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2022.

Kids Definition



as·​tro·​nom·​i·​cal ˌas-trə-ˈnäm-i-kəl How to pronounce astronomical (audio)
variants also astronomic
: of or relating to astronomy
: extremely or unbelievably large
the cost was astronomical
astronomically adverb

More from Merriam-Webster on astronomical

Last Updated: - Updated example sentences
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