Industrious, striving, or rival
Amilliana is a modern American elaboration of the names Amelia and Amilla. It likely combines the Germanic roots of Amelia, meaning 'work' or 'industrious,' with the Latin roots of names like Emiliana, meaning 'rival.'
Less common today
Amilliana isn't in the latest US Top 1000. It last peaked at #4,438 in 2018.
US births per 5-year period, 1990βpresent (SSA data).