Definition of microscopic adjective from the Oxford Advanced Learner's Dictionary

     

    microscopic

     adjective
    adjective
    BrE BrE//ˌmaɪkrəˈskɒpɪk//
     
    ; NAmE NAmE//ˌmaɪkrəˈskɑːpɪk//
     
     
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  1. 1[usually before noun] extremely small and difficult or impossible to see without a microscope a microscopic creature/particle The problems could be caused by microscopic organisms called blue-green algae. (humorous) The sandwiches were microscopic!
  2. 2[only before noun] using a microscope a microscopic analysis/examination
See the Oxford Advanced American Dictionary entry: microscopic