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English definition of “astronomical”

astronomical

adjective (LARGE)    /ˌæs.trəˈnɒm.ɪ.kəl/ US  /-ˈnɑː.mɪ-/ (also astronomic)
informal describes an amount that is extremely large: an astronomical rent/bill/price/feeEnormousBig and quite big
(Definition of astronomical adjective (LARGE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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