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Also; along with (something else). In addition, you will need to stay late whenever the senior staff has to.
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.
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]
Also; as well.