ˈrādiks noun
( plural radi·ces ˈradəˌsēz, ˈrād- ; or radixes ˈrādiksə̇z)
Etymology: Latin, root — more at root
1. : base 6d
10 is the radix of the common system of logarithms
2. obsolete : root 4a
3. : the primary source : the originating cause
4. archaic : etymon , root 6
5. : the root of a plant
6. : radicle 2 ; especially : a root of a cranial or spinal nerve