Pronunciation: (ik-strav"u-gan'zu), [key]
1. a musical or dramatic composition or production, as comic opera or musical comedy, marked by a loose structure, a frivolous theme, and elaborate costuming and staging.
2. any lavish or opulent show, event, assemblage, etc.: an extravaganza of new housewares on the twelfth floor.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.