"Blend of Adria and Ella"
The name Adriella is commonly a female name from the "American" origin.
Adriella is a modern formation that first appears in United States birth records in 2008. It combines the Adri- element found in names such as Adria and Adriana with the -ella ending seen in Ella, Ariella and Briella. No earlier use in a documented language or naming tradition is recorded for this spelling.
The pronunciation of Adriella is AY-dree-EL-uh.