pa·ter·nal 
(pə-tûrnəl)
(pə-tûrnəl)adj.
1. Relating to or characteristic of a father or fatherhood; fatherly.
2. Received or inherited from a father: a paternal trait.
3. Related through one's father: my paternal aunt.
[Middle English, from Old French, from Late Latin paternālis, from Latin paternus, from pater, father; see pəter- in the Appendix of Indo-European roots.]
pa·ternal·ly adv.