/səˈbɔːrdɪnət ˌlɛdʒɪsˈleɪʃən/ – noun
Definition: Quy định phụ.
A more thorough explanation: law made by statutory authorities and government departments under powers given to them by (primary) legislation to carry out the requirements of the primary legislation
Example: The Welsh Assembly is empowered to make subordinate legislation under the (UK) Government of Wales Act 1998.