add-on
add-on
/ˈædˌɑːn/ noun , pl -ons [ count ]
: an extra part or device that can be added to something else to improve it
He has all the latest add-ons for his computer.
I knew the base price for the car, but with the add-ons I wanted, the final price was quite a bit higher.
— often used before another noun
add-on components
add-on equipment
