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English definition of “astronomical”

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astronomical

adjective uk   /ˌæs.trəˈnɒm.ɪ.kəl/ us    /-ˈnɑː.mɪ-/

astronomical adjective (SCIENTIFIC)

[before noun] connected with astronomy: the Royal Astronomical Society astronomical observations/instruments

astronomical adjective (LARGE)

informal ( also astronomic ) An astronomical amount is extremely large: an astronomical rent/bill/price/fee
(Definition of astronomical from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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