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Definition of astronomical

astronomical

/ˌæs.trəˈnɑː.mɪ.kəl/
as · tro · nom · i · cal
Adverb:astronomically
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astronomical Lexical Profile

astronomical Game Scores & Validity

• adjective

1

Extremely large, vast, or excessively high in amount, scale, or cost.

Example

"The company faced astronomical legal fees after the prolonged patent dispute."

2

Relating to astronomy, the scientific study of celestial objects, space, and the physical universe.

Example

"The observatory was equipped with advanced instruments for making precise astronomical observations."

Synonyms
View all synonyms for astronomical
Antonyms
View all antonyms for astronomical

Word Nuance & Usage

In scientific contexts, "astronomical" and "astronomic" are largely interchangeable, though "astronomical" is far more common overall and is exclusively preferred for the figurative sense of "extremely large."

• Rhymes for astronomical

• Nearby Words

astronautical
astronomer
astronomic
astronomical
astronomically
astronomy
astrophysical

Word Origin & Etymology

First recorded in the mid-16th century, derived from Latin "astronomicus" and Ancient Greek "astronomikos," from "astron" (star) and "nomos" (arranging or law), plus the English suffix "-al."

Cite this Entry

Wordmom. (2026). Definition of Astronomical. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/astronomical
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