WordNet (r) 3.0 (2006):
rootage n 1: fixedness by or as if by roots; "strengthened by rootage in the firm soil of faith" 2: a developed system of roots [syn: rootage, root system] 3: 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" [syn: beginning, origin, root, rootage, source]