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Meaning of matripotestal

mat•ri•po•tes•tal

Pronunciation: (ma"trē-pō-tes'tl, mā"-), [key]
— adj. Anthropol.
  1. of or pertaining to the authority exercised by a mother or a mother's blood relatives.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.