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Definition of astronomic
astronomic
/ˌæs.trəˈnɑː.mɪk/
as · tro · nom · ic
Adverb:astronomically
astronomic Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Rare
Syllables
4
astronomic Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Relating to or connected with the scientific study of astronomy and celestial bodies.
Example
"The ancient monument was carefully aligned with key astronomic events such as the summer solstice."
2
Extremely large, vast, or immense in amount, scale, or cost.
Example
"The infrastructure project was eventually canceled due to its astronomic expense."
Synonyms
View all synonyms for astronomic Antonyms
View all antonyms for astronomicWord Nuance & Usage
While "astronomic" and "astronomical" are largely interchangeable, "astronomical" is far more common in both scientific contexts and figurative expressions of immense size or cost.
• Rhymes for astronomic
• Nearby Words
Word Origin & Etymology
Borrowed from French astronomique or Late Latin astronomicus, from Ancient Greek astronomikos, ultimately combining astron ("star") and nomos ("arranging, law").
Cite this Entry
Wordmom. (2026). Definition of Astronomic. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/astronomic