- Allied by blood; kindred by birth; specifically [Law] , related on the mother's side.
- Of the same or a similar nature; of the same family; proceeding from the same stock or root; allied; kindred; as, a cognate language.
Etymology: L. cognatus; co- + gnatus natus, p. p. of nasci, anciently gnasci, to be born. See Nation, and cf. Connate