Meaning of aria da capo

a•ri•a da ca•po

Pronunciation: (är'ē-u du kä'pō), [key]
— pl. arias da capo.
  1. an operatic aria in three sections with the first and third sections alike and the middle section contrasting.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.