noun (plural sesquicentenaries)
The one-hundred-and-fiftieth anniversary of a significant event: the year in which both celebrate their sesquicentenaries
More example sentences
- The sesquicentenary of the Eureka Stockade in Ballarat, Victoria, is due to be commemorated on December 3.
- That is the challenge confronting this Parliament as it embarks upon its second sesquicentenary.
- A note from the Department of Posts says that the Cartes Maxim series is also in celebration of the sesquicentenary of India Post.
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Definition of sesquicentenary in:
- The US English dictionary