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progenitor /proʊˈʤɛnətɚ/  

  • noun
    plural -tors
    [count] formal
    someone who first thinks of or does something :a person who begins something
    something that is a model for something else :something that begins the development of something else
    a mechanical progenitor [=precursorof the modern computer
    biology :a person or animal in the past that is related to a person or animal living now :ancestor