agnation
noun
ag·na·tion
ag-ˈnā-shən
plural -s
: the relationship of agnates
Word History
Etymology
borrowed from French & Latin; French, borrowed from Latin agnātiōn-, agnātiō, from agnāscī "to be born in addition to" + -tiōn-, -tiō, noun suffix
First Known Use
1611, in the meaning defined above