O-dē'ŏn, n.

n. [Lat. odeum, Gr. ᾠδεῖον, from ᾠδή; Fr. odéon.] A kind of theater in ancient Greece, in which poets and musicians submitted their works to the approval of the public, and contended for prizes; — sometimes applied, in modern usage, as the name of a hall or chamber for musical or dramatic performances.