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progenitor (noun) The first ancestor; the person who starts an idea or development.
According to the Bible, Adam is the progenitor of mankind; that is, he is the first member of mankind, and from him are descended all other human beings. The progenitor of a family is the most ancient member of a family. A person who first gets the idea of something that others follow is the progenitor of the idea.
- The progenitor of the Mogul empire in India is Babur. It is from him the later Mogul emperors were descended.
- Giovanni often claims that his progenitor was from a princely family in Italy, and is proud that royal blood flows through him.