noun.
A theatrical production that has many of the musical elements of opera but is lighter and more popular in subject and style and contains spoken dialogue.
The Century Dictionary and Cyclopedia
noun.
A short opera, generally of a light character and so belonging to the class of comic opera or opera bouffe.
the GNU version of the Collaborative International Dictionary of English
noun.
A lighterversion of opera with a frivolousstory and spokendialogue.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a short amusing opera
Word Usage
"Franz Lehár's operetta is the perfect titbit for a financial crisis, as it concerns the fiscal anxieties of a small European state whose entire GDP has ended up in a flighty young widow's jewellery drawer."