Related Clues:

• Centennial opening?
• Prefix with -ceps
• Prefix with axial
• Motor starter
• Prefix with cycle or color
• Prefix with 20-Across
• Washington, D.C., subway
• Urban area, for short
• Paris transport
• Pent- minus two
• Start to state?
• Ode opener?
• Prefix with "cycle"
• Prefix for "angle" or "lateral"
• Uni- + bi-