astronomical
adjective
as·tro·nom·i·cal
ˌa-strə-ˈnä-mi-kəl 
variants
or less commonly astronomic
1
: of or relating to astronomy
astronomical observations
2
: enormously or inconceivably large or great
astronomical numbers
an astronomical price
Synonyms of astronomical
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
Mostly Mute Monday tells an astronomical story in images, visuals, and no more than 200 words.
—
Big Think, 30 Mar. 2026
Given its plans to invest $600 billion in AI infrastructure over the next four years, the gulf between its revenues and comparatively astronomical expenses is set to continue to grow.
—Victor Tangermann, Futurism, 26 Mar. 2026
Determining the exact date of the holiday has a long history and is complicated by the difference between the precise astronomical calendar and the ecclesiastical calendar, which was produced centuries ago.
—Dallas Morning News, 26 Mar. 2026
According to the Old Farmer's Almanac, the astronomical first day of spring follows the spring equinox, which fell on March 20 this year.
—Kaitlyn McCormick, USA Today, 26 Mar. 2026
See All Example Sentences for astronomical
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Big Think, 30 Mar. 2026
Given its plans to invest $600 billion in AI infrastructure over the next four years, the gulf between its revenues and comparatively astronomical expenses is set to continue to grow.
—Victor Tangermann, Futurism, 26 Mar. 2026
Determining the exact date of the holiday has a long history and is complicated by the difference between the precise astronomical calendar and the ecclesiastical calendar, which was produced centuries ago.
—Dallas Morning News, 26 Mar. 2026
According to the Old Farmer's Almanac, the astronomical first day of spring follows the spring equinox, which fell on March 20 this year.
—Kaitlyn McCormick, USA Today, 26 Mar. 2026
See All Example Sentences for astronomical
Cite this Entry
“Astronomical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/astronomical. Accessed 4 Apr. 2026.
Copy CitationKids Definition
astronomical
adjective
as·tro·nom·i·cal
ˌas-trə-ˈnäm-i-kəl
variants
also astronomic
1
: of or relating to astronomy
2
: extremely or unbelievably large
the cost was astronomical
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