Additional | Mean of additional in English Dictionary

/əˈdɪʃənl̟/

• more than is usual or expected
1. Larger windows will require additional work, but the additional light they will provide may be worth the extra trouble.
2. There's an additional [=extra] fee/charge for returning the car a day late.
3. The memory on this computer has the additional [=added] advantage of being expandable.