AGNATIO
agnatio (ag-nay-shee-oh). [Latin] Roman law. Kinship through the male line, not necessarily
involving blood ties; specif., an affiliation of free persons of either sex in the power (patria
potestas) of the senior living male or of a male who would be in his power if he were living. • An
agnatic relationship could be created either by adoption or by a blood relationship (cognatio)
traced solely through the male side of a family. See COGNATIO; patria po-testas under
POTESTAS. [Blacks Law 8th]