Related on or descended from the father's or male side.
Coming from a common source; akin.
n. A relative on the father's or male side only.
[Latin agnātus, past participle of agnāscī, to become an agnate : ad-, ad- + nāscī, to be born; see genə- in Indo-European roots.] ag·nat'ic (āg-nāt'ĭk) adj., ag·nat'i·cal·ly adv., ag·na'tion n.