maternal

Concise Oxford English Dictionary © 2008 Oxford University Press:
maternal/məˈtɜːnl/

▶adjective

• 1 relating to a mother.

  ■ associated with or typical of a mother; motherly.

• 2 related through the mother's side of the family: maternal grandparents.

– derivatives
maternalism noun,
maternalist adjective,
maternalistic adjective,
maternally adverb.

– origin C15: from Fr. maternel, from L. maternus, from mater ‘mother’.