Little battle or companion
Kadien is a modern American invention, likely a creative blend of the name Kade and the popular -aden suffix. It may also be viewed as a variant of the Gaelic name Caden, which stems from the word 'cath' meaning battle.
Less common today
Kadien isn't in the latest US Top 1000. It last peaked at #5,964 in 2012.
US births per 5-year period, 1990βpresent (SSA data).