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

     

    geologically

     adverb
    adverb
    BrE BrE//ˌdʒiːəˈlɒdʒɪkli//
     
    ; NAmE NAmE//ˌdʒiːəˈlɑːdʒɪkli//
     
     
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  1. 1in a way that is connected with the scientific study of the earth, including the origin and history of the rocks and soil of which the earth is made
  2. 2in a way that is connected with the origin and history of the rocks and soil of a particular area Geologically speaking, 500 million years is a very short time. a region of the earth's crust that is geologically unstable