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astronomy

as·tron·o·my

astronomy

 
pronunciation:
stra n mi
features:
Word Combinations (noun), Word History, Word Explorer, Word Parts
part of speech: noun
definition: the branch of science that studies the universe beyond the earth.
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Word History
The word astronomy comes from astronomos, an ancient Greek word that means "one who arranges the stars."
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  outer space, science, space
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