adj. & n.
adj. 1 descended esp. by male line from the same male ancestor (cf. COGNATE). 2 descended from the same forefather; of the same clan or nation. 3 of the same nature; akin.
n. one who is descended esp. by male line from the same male ancestor. agnatic adj. agnation n.
[ L agnatus f. ad to + gnasci be born f. stem gen- beget ]