Noun
(uncountable, anthropology) The condition of being patrilineal.
(countable, anthropology) A patrilineal descent or kinship.
Source: en.wiktionary.orgPatrilineality, also known as the male line, the spear side, citation or agnatic kinship, is a common kinship system in which an individual's family membership derives from and is traced through his or her father's lineage. Source: Internet