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
- Brobdingnagian
- bumper
- colossal
- cosmic
- cosmical
- cyclopean
- elephantine
- enormous
- galactic
- gargantuan
- giant
- gigantesque
- gigantic
- grand
- herculean
- heroic
- heroical
- Himalayan
- huge
- humongous
- humungous
- immense
- jumbo
- king-size
- king-sized
- leviathan
- mammoth
- massive
- mega
- mighty
- monster
- monstrous
- monumental
- mountainous
- oceanic
- pharaonic
- planetary
- prodigious
- super
- super-duper
- supersize
- supersized
- titanic
- tremendous
- vast
- vasty
- walloping
- whacking
- whopping
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
That astronomical sum – including hundreds of millions of dollars for transmission lines, electric substations and house wiring – is a huge reason other cooperatives have decided to help, their representatives said.
—
Ashley Killough, CNN, 3 July 2024
That's because the earth's astronomical year is actually 365.25 days long, writes Space.com.
—John Tufts, The Indianapolis Star, 20 June 2024
The summer solstice is the first day of astronomical summer.
—Tiffany Acosta, The Arizona Republic, 15 June 2024
The biggest astronomical event of the year is almost here.
—Claire Reid, Journal Sentinel, 6 June 2024
See all Example Sentences for astronomical 
Ashley Killough, CNN, 3 July 2024
That's because the earth's astronomical year is actually 365.25 days long, writes Space.com.
—John Tufts, The Indianapolis Star, 20 June 2024
The summer solstice is the first day of astronomical summer.
—Tiffany Acosta, The Arizona Republic, 15 June 2024
The biggest astronomical event of the year is almost here.
—Claire Reid, Journal Sentinel, 6 June 2024
See all Example Sentences for astronomical
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'astronomical.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Articles Related to astronomical
Dictionary Entries Near astronomical
Cite this Entry
“Astronomical.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/astronomical. Accessed 15 Jul. 2024.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share