quincentennial   (TTS Sound)

The quincentennial has 2 Senses.

• quincentennial, quincentenary
• the 500th anniversary (or the celebration of it)
• 500回目の記念日（またはそれの祝賀会）

• quincentenary, quincentennial
• of or relating to a 500th anniversary; "the quincentennial celebration of the founding of the city"
• 500回記念の、または、500回記念に関する