Etymology
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matrilineal (adj.)

"pertaining to or descended from the mother's side," 1897, from matri- + lineal. Related: Matrilineage; matrilineally.

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Definitions of matrilineal

matrilineal (adj.)
based on or tracing descent through the female line;
matrilineal inheritance
Synonyms: matrilinear
From wordnet.princeton.edu