Lat. In the civil law. Cognation. Relationship, or kindred generally. Dig. 38, 10, 4, 2; Inst. 3, 6, pr. Relationship through females, as distinguished from agnatio, or relationship through males. Agnatio a patre sit, cognatio a mat re. Inst 3, 5, 4. See AGNATIO. In canon law. Consanguinity, as distinguished from affinity. 4 Reeve, Eng. Law, 56-58. Consanguinity, as including affinity. Id.