Combination of Mia and Asia
Miasia is a modern American invention likely created by blending the popular name Mia with the name of the continent Asia. Mia is often associated with the Latin word for 'mine' or as a diminutive of Maria, while Asia is derived from the Greek word for 'sunrise' or 'east'.
Less common today
Miasia isn't in the latest US Top 1000. It last peaked at #4,051 in 2008.
US births per 5-year period, 1990βpresent (SSA data).