Modern creation, possibly a variant of Deon or Dion
Dejion is a modern American name likely created as a phonetic variant of Deon or Dion, which stems from Dionysius. It may also be influenced by the French name Dijon, the name of a city in eastern France. Its usage is rare and often chosen for its unique sound and contemporary feel.
Less common today
Dejion isn't in the latest US Top 1000. It last peaked at #5,167 in 1996.
US births per 5-year period, 1990βpresent (SSA data).