/ˈsɛkənˌdɛri ˌlɛdʒɪsˈleɪʃən/ – Phrase
Definition: Quy định phụ.
A more thorough explanation: law made by executive authority (=power to enforce laws) based on primary legislation (=legislation made by the legislative branch of government, rather than rules and regulations made by an authority under powers given to them by primary legislation)
Example: The secondary legislation establishes regulations regarding telecommunications for several federal departments.