Definition of astronomically adverb from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌæstrəˈnɒmɪkli//
    ; NAmE NAmE//ˌæstrəˈnɑːmɪkli//
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  1. 1extremely; by a very large amount Interest rates are astronomically high. Their living costs rose astronomically.
  2. 2in a way that is connected with astronomy an astronomically accurate 16th-century calendar