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Pronunciation varies by accent · noun
(astronomy) An astronomical unit of distance equal to 10¹⁵ parsecs..
Use petaparsec when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Petaparsec means (astronomy) An astronomical unit of distance equal to 10¹⁵ parsecs..
Common synonyms include Ppc.
The opposite depends on the specific sense.
Use petaparsec where its definition matches the intended context.
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