- a forefather; ancestor
- an earliest parent or ancestor, as of a race
WordReference Random House Learner's Dictionary of American English © 2026
WordReference Random House Unabridged Dictionary of American English © 2026
pri•mo•gen•i•tor
(prī′mə jen′i tər),USA pronunciation n.
- Lawa first parent or earliest ancestor:Adam and Eve are the primogenitors of the human race.
- a forefather or ancestor.
- Late Latin prīmōgenitor ancestor, equivalent. to Latin prīmō at first + genitor genitor
- 1645–55
Collins Concise English Dictionary © HarperCollins Publishers::
primogenitor /ˌpraɪməʊˈdʒɛnɪtə/ n