- add on
- 1) PHRASAL VERB: usu passive If one thing is added on to another, it is attached to the other thing, or is made a part of it.
[V n P] Holidaymakers can also add on a week in Majorca before or after the cruise...
[V-ed P] To the rear is a large dining room - added on early this century.2) PHRASAL VERB If you add on an extra amount or item to a list or total, you include it.
English dictionary. 2008.