in addition
Also; along with (something else). In addition, you will need to stay late whenever the senior staff has to.
in addition to (something)
Along or in conjunction with (something else). In addition to the job's other responsibilities, you will need to stay late whenever the senior staff has to. And, in addition to all those chores, my brother isn't allowed to go out with his friends for a whole month!
in addition (to something)
additionally; further; moreover; as an additional thing or person. In addition, I would like for you to sweep the kitchen floor. I put the books away, and in addition to that, I cleaned up my desk.
in addition
1. Also, as well as. For example, They study their instruments and, in addition, theory and music history.
2. in addition to. Over and above, besides, as in In addition to a new muffler, the truck needs new brakes. [c. 1900]
in addition
Also; as well.
in addition to
Over and above; besides.