WordReference Random House Unabridged Dictionary of American English © 2026
mat•ri•lat•er•al
(ma′trə lat′ər əl, mā′-),USA pronunciation adj.
mat′ri•lat′er•al•ly, adv.
- Anthropologyrelated through the mother, as to a maternal uncle. Cf. patrilateral.
- matri- + lateral 1950–55
'matrilateral' also found in these entries (note: many are not synonyms or translations):