sesquicentenary

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noun

A 150-year anniversary.

OriginEnglish centenary ← Latin centēnārius →
Scrabble 29
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Meanings

nounsesquicentenary (plural sesquicentenaries)

plural sesquicentenaries

  1. A 150-year anniversary.

Origin

  1. Englishsesqui-
  2. Latincentēnārius
  3. Englishcentenary
  4. Englishsesquicentenary

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

Full word history & related roots →

Translations

German Hundertfünfzigjahrfeier, hundertfünfzigjähriges Jubiläum
  • Hundertfünfzigjahrfeiera 150 year anniversary
  • hundertfünfzigjähriges Jubiläuma 150 year anniversary
Portuguese sesquicentenário
  • sesquicentenárioa 150 year anniversary
Russian полуторавековой юбиле́й, стопятидесятилетие
  • полуторавековой юбиле́й (polutoravekovoj jubiléj)a 150 year anniversary
  • стопятидесятилетие (stopjatidesjatiletije)a 150 year anniversary
Spanish sesquicentenario
  • sesquicentenarioa 150 year anniversary
Cite this entry
APA

sesquicentenary. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sesquicentenary

MLA

“sesquicentenary.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sesquicentenary. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sesquicentenary,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sesquicentenary.

Source: sesquicentenary on Wiktionary, CC BY-SA 4.0.