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astronomical

as·tro·nom·i·cal [ àstrə nómmik'l ] or as·tro·nom·ic [ àstrə nómmik ]


adjective 
Definition:
 
1. relating to astronomy: relating to astronomy

2. immeasurably great: immeasurably numerous, high, or great ( informal )
reached astronomical proportions


as·tro·nom·i·cal·ly adverb
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