noun
a person or thing from which a person, animal, or plant is descended or originates; an ancestor or parent.
adjective
relating to a progenitor or progenitors; ancestral.
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The progenitor of this genetic disorder has been traced back to a single individual in the family tree.
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I heard that Sarah's great-grandmother is the progenitor of their family's wealth.
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My dad always jokes that he's the progenitor of our family's love for spicy food.
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The ancient civilization is considered the progenitor of modern society as we know it.