The text of a dramatic musical work such as an opera, including the lyrics to be sung and sometimes interpolated spoken passages.
noun

Define libretto. Libretto synonyms, libretto pronunciation, libretto translation, English dictionary definition of libretto. Librettos or libretti 1. A libretto (Italian for 'booklet') is the text used in, or intended for, an extended musical work such as an opera, operetta, masque, oratorio, cantata or musical. The term libretto is also sometimes used to refer to the text of major liturgical works, such as the Mass, requiem and sacred cantata, or the story line of a ballet.

The words, or text, of an opera, oratorio, or other long choral work.
noun
The text of a dramaticmusicalwork, such as an opera.
noun

Origin of libretto

Musical Libretto

Musical

Musical Librettos Online

  • Italian diminutive oflibrobookfrom Latin liberlibr-inner bark of trees used as a writing material, book
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Italian, diminutive of libro (“book'), from Latinliber (“book').
    From Wiktionary