From Longman Business Dictionary
permissionper·mis·sion /pəˈmɪʃənpər-/ noun [countableC, uncountableU] when someone is officially told that they are allowed to do somethingpermission to do somethingThe Board denied the company permission to build the pipeline.
The officer approved $4.5 million in loans without getting the bank’s permission.
permission forAirlines need their own government’s permission for internal flights.
→ planning permission