eobiont

/ˈiːoʊˌbaɪɑnt/
noun
  1. A hypothetical early form of life that existed before the first true cells, thought to be a simple organic structure.
    • Scientists debate what an eobiont might have looked like on early Earth.
    • An eobiont would have been much simpler than even the smallest bacteria.
    • The concept of an eobiont helps researchers imagine how life began.
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