microscopic

Adjective
  1. Of or relating to or used in microscopy (synset 302930157)
    "microscopic analysis"; "microscopical examination"
  2. Visible under a microscope;
    Using a microscope (synset 302526627)
  3. Extremely precise with great attention to details (synset 301844506)
    "examined it with microscopic care"
  4. So small as to be invisible without a microscope (synset 301396822)
    "differences were microscopic"

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