"Blend of Michael and John"
The name Michaeljohn is commonly a male name from the "English" origin.
Michaeljohn is a compound given name formed by joining Michael and John, both long-established English-language names that derive from Hebrew. The two elements are written together as a single word with no hyphen or space. In United States birth records this combined form first appears in 1973.
The pronunciation of Michaeljohn is MY-kul-jon.