Word.ws English Dictionary

sesquicentenary

sesquicentenary noun: a 150-year anniversary.

Noun

sesquicentenary (plural sesquicentenaries)

  1. A 150-year anniversary.

Forms of sesquicentenary

pluralsesquicentenaries

Origin of sesquicentenary

From sesqui- (“one and a half”) + centenary (“100 year anniversary”).

Questions about sesquicentenary

What does sesquicentenary mean?
Sesquicentenary means a 150-year anniversary.
What part of speech is sesquicentenary?
Sesquicentenary is a noun.
What is the plural of sesquicentenary?
The plural of sesquicentenary is sesquicentenaries.

Words near sesquicentenary in the dictionary

  1. sesquicarbonate
  2. sesquicarbonates
  3. sesquicentenarian
  4. sesquicentenarians
  5. sesquicentenaries
  6. sesquicentenary
  7. sesquicentennial
  8. sesquicentennially
  9. sesquicentennials
  10. sesquicentury
  11. sesquichloride

Source and license

Adapted from Wiktionary: sesquicentenary (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “sesquicentenary.” Word.ws, https://word.ws/sesquicentenary. Based on Wiktionary, CC BY-SA 4.0.