agnation

plural agnations

1. countableuncountableconsanguinity by a line of males only, as distinguished from cognation

   Between an uncle and his sister's son, therefore, there is no agnation, but only kinship

   1803, William Alexander Hunter, A Systematic and Historical Exposition of Roman Law in the Order of a Code

   1 more example

   Furthermore, for reasons that will by now be obvious, interhouse relations represent a paradigm for the politics of agnation at large: any competition for influence or position among patrilateral kin is, in essence, a rivalry between houses produced by a shared ancestor and reproduced across the generations, and particular units, whether or not they take the initiative in such processes, are ultimately drawn into their purview (see chap. 2).

   1986, John L. Comaroff, Simon Roberts, Rules and Processes, →ISBN, page 226

2. countableuncountablegrammarThe property of being agnate.