Definition of sesquicentennial
: a 150th anniversary or its celebration
Recent Examples of sesquicentennial from the Web
And already, the historical society is thinking ahead to how to celebrate Dundalk's sesquicentennial.
And the sesquicentennial of the book in 2009, along with the bicentennial of Darwin’s birth, was more widely marked than the 1858 event.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sesquicentennial'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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