[ li-bret-oh ]
/ lɪˈbrɛt oʊ /

noun, plural li·bret·tos, li·bret·ti [li-bret-ee] /lɪˈbrɛt i/.

the text or words of an opera or similar extended musical composition.
a book or booklet containing such a text.

Origin of libretto

1735–45; < Italian, diminutive of libro book < Latin liber; see -et Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for libretto

British Dictionary definitions for libretto

/ (lɪˈbrɛtəʊ) /

noun plural -tos or -ti (-tiː)

a text written for and set to music in an opera, etc

Word Origin for libretto

C18: from Italian, diminutive of libro book
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012