1. Fixedness by or as if by roots
   "strengthened by rootage in the firm soil of faith"
    
2. A developed system of roots
   "The extensive rootage of the oak tree helps anchor it firmly in the soil";
   - root system
    
3. The place where something begins, where it springs into being
   "the Italian rootage of the Renaissance";
   - beginning, origin, root, source

Derived forms: rootages

Type of: fixedness, immobility, point, scheme, stationariness, system