Of the sea; loyal; or a short form of Cordelia.
Dilia is a rare name with multiple potential etymologies. It is often used as a diminutive of Cordelia, which has Latin and Celtic roots, or Odilia, a Germanic name meaning 'wealth' or 'fortune'. In some Spanish-speaking contexts, it is a standalone name associated with the sea.
Less common today
Dilia isn't in the latest US Top 1000. It last peaked at #10,191 in 2005.
Puerto Rican poet and educator
Swedish actress
US births per 5-year period, 1990–present (SSA data).