Son of Adam
A modern spelling variant of Addison, which originated as an English surname meaning 'son of Adam'. While the root name Adam is Hebrew for 'man' or 'red earth', this specific spelling is a contemporary American adaptation.
Less common today
Addisen isn't in the latest US Top 1000. It last peaked at #1,543 in 2007.
US births per 5-year period, 1990βpresent (SSA data).