maternal
ma.ter.nal \m*-'t*rn-*l\ \-*l-e-\ aj [ME, fr. MF maternel, fr. L maternus, fr. mater mother - mo]re at MOTHER 1: of, relating to, or characteristic of a mother : MOTHERLY 2a: related through a mother 2b: inherited or derived from a mother - ma.ter.nal.ly av