rootage -- (fixedness by or as if by roots; "strengthened by rootage in the firm soil of faith")
rootage, root system -- (a developed system of roots)
beginning, origin, root, rootage, source -- (the place where something begins, where it springs into being; "the Italian beginning of the Renaissance"; "Jupiter was the origin of the radiation"; "Pittsburgh is the source of the Ohio River"; "communism's Russian root")