primogenitor

/ˌpraɪməˈdʒɛnɪtər/
noun
  1. The first ancestor of a family or group; a forefather.
    • Many myths tell of a single primogenitor from whom all humans descended.
    • The family's primogenitor came to America in the 1600s.
    • The museum traced the tribe's primogenitor back to a legendary warrior.
  2. The earliest known form or originator of something.
    • This ancient manuscript is considered the primogenitor of modern legal codes.
    • The Wright brothers' plane was the primogenitor of all modern aircraft.
    • That early computer is seen as the primogenitor of today's smartphones.
Antonyms
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