1902, from Greek oideion "building for musical performance."
Examples from the Web for odeon
Still, Odeon—one of Europe's largest chains—says it won't show the film on its screens in Britain, Ireland, and Italy.
This was the only time the Odeon was ever opened to Anti-Slavery.
Such things will happen so long as they go and read the newspapers under the arcades of the Odeon.Les Misrables|Victor Hugo
He greatly admired the piece, and often went to see it acted at the Odeon.Memoirs of Napoleon Bonaparte, Complete|Louis Antoine Fauvelet de Bourrienne
It was a ball and supper, on the most ample and splendid scale, and took place at the Odeon.
The next night we went to the Odeon, a romantic melodrama in six acts, and I know not how many tableaux.The Parisians, Complete|Edward Bulwer-Lytton