sesquicentennial - Wiktionary, the free dictionary Of, or relating to a sesquicentenary sesquicentennial (plural sesquicentennials) A 150th anniversary The city celebrated its sesquicentennial last year
sesquicentennial - WordReference. com Dictionary of English pertaining to or marking the completion of a period of 150 years n a 150th anniversary or its celebration sesqui - + centennial 1875–80, American No titles with the word (s) "sesquicentennial" Visit the English Only Forum Help WordReference: Ask in the forums yourself
sesquicentennial - Encyclopedia. com ses·qui·cen·ten·ni·al ˌseskwisenˈtenēəl • adj of or relating to the one-hundred-and-fiftieth anniversary of a significant event • n a one-hundred-and-fiftieth anniversary Source for information on sesquicentennial: The Oxford Pocket Dictionary of Current English dictionary