Invented name, possibly a blend of Myra and Asia
Mylasia is a modern American coinage with no singular etymological root. It likely follows the 20th-century trend of combining melodic prefixes like 'My-' with established names or place-names like 'Asia'. Because it is a creative invention, its meaning is often interpreted through its component parts.
Less common today
Mylasia isn't in the latest US Top 1000. It last peaked at #7,419 in 2005.
US births per 5-year period, 1990βpresent (SSA data).