Likely a modern American creation, possibly related to Kadisha
Kadesia is a modern American name with uncertain roots. It is likely a creative variation of names like Kadisha or Khadija, or a rhythmic blend of the prefix Ka- with the suffix -desia. Its usage is rare and it does not have a single established etymological history.
Less common today
Kadesia isn't in the latest US Top 1000. It last peaked at #3,986 in 1993.
US births per 5-year period, 1990βpresent (SSA data).