microfossil microfossil  /ˈmaɪ ˌkroʊ ˈfɑ səl/

Definition(s):

  • (n) a fossil that must be studied microscopically

Usage(s):

  • What he stumbled on, writes Siegel in Science, was a microorganism that may be the living descendant of a recently discovered microfossil that is 2 billion years old.
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fathom fathom
/ˈfæ ðəm /