Noun

• 1. fixedness by or as if by roots;

  "strengthened by rootage in the firm soil of faith"

• 2. a developed system of roots

• 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"