matrilateral

[ ma-truh-lat-er-uh l, mey- ]
/ ˌmæ trəˈlæt ər əl, ˌmeɪ- /

adjective

related through the mother, as to a maternal uncle.
Compare patrilateral.

Origin of matrilateral

First recorded in 1950–55; matri- + lateral

Related forms

mat·ri·lat·er·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019