Noble person
A modern American spelling variant of Addison, which originally served as an English surname meaning 'son of Adam.' While the 'son of' suffix is literal, the name is now predominantly used for girls and is associated with the Hebrew root for 'man' or 'earth.'
Less common today
Adysson isn't in the latest US Top 1000. It last peaked at #9,528 in 2007.
US births per 5-year period, 1990βpresent (SSA data).