1. a small theater or concert hall, especially one used for musical performances in ancient Greece and Rome
Usage: historical; architecture

Examples

• The ancient odeum could seat about 5,000 spectators for musical competitions.
• Archaeologists discovered the ruins of a Roman odeum near the forum.
• The modern concert hall was designed to resemble a classical odeum.
• Musicians performed in the covered odeum during the festival.
• The odeum’s excellent acoustics made it ideal for poetry recitations.