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, 23 Mar. 2026
The museum also hosts pop-up stargazing festivities timed to exciting astronomical events, such as bright comets or planet conjunctions.
—Stephanie Vermillion, Outside, 23 Mar. 2026
Altman and other OpenAI executives have for years stressed that compute is a major bottleneck for the company, which has proceeded to raise astronomical sums of cash, including $110 billion earlier this year, with $50 billion coming from Amazon.
—Ashley Capoot, CNBC, 22 Mar. 2026
The one that Apple sells for the basic iPad costs an astronomical $249.
—PC Magazine, 20 Mar. 2026
See All Example Sentences for astronomical
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Big Think, 23 Mar. 2026
The museum also hosts pop-up stargazing festivities timed to exciting astronomical events, such as bright comets or planet conjunctions.
—Stephanie Vermillion, Outside, 23 Mar. 2026
Altman and other OpenAI executives have for years stressed that compute is a major bottleneck for the company, which has proceeded to raise astronomical sums of cash, including $110 billion earlier this year, with $50 billion coming from Amazon.
—Ashley Capoot, CNBC, 22 Mar. 2026
The one that Apple sells for the basic iPad costs an astronomical $249.
—PC Magazine, 20 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 26 Mar. 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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