matrilineally

/ˌmætrəˈlɪniəli/
adverb
  1. In a way that traces descent or inheritance through the mother's line.
    • The family's property is passed down matrilineally from mother to daughter.
    • In that society, leadership is determined matrilineally, so the chief's sister's son inherits the title.
    • She researched how her ancestors were connected matrilineally over five generations.
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