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/æˈpæstɹ(ə)n/ · noun
(astronomy) The point of greatest separation between a celestial object and the star which it orbits..
Use apastron when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Apastron means (astronomy) The point of greatest separation between a celestial object and the star which it orbits..
The closest synonym depends on the sentence and intended sense.
Possible antonyms include periastron.
Use apastron where its definition matches the intended context.
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