c.1300, from O.Fr. nacion, from L. nationem (nom. natio) "nation, stock, race," lit. "that which has been born," from natus, pp. of nasci "be born" (Old L. gnasci; see genus). Political sense has gradually taken over from racial meaning "large group of people with common ancestry." Older sense preserved in application to N.Amer. Indian peoples (1640s). Nation-building first attested 1907 (implied in nation-builder).