Meaning of “paternal” - Learner’s Dictionary

paternal

adjective uk us /pəˈtɜːnəl/
LIKE A FATHER

like a father:

paternal affection
FATHER'S FAMILY [ always before noun ]

A paternal relative is part of your father's family:

He was my paternal grandfather.

(Definition of “paternal” from the Cambridge Learner’s Dictionary © Cambridge University Press)