Meanings
- not comparableOccurring every 150 years.
- not comparableOf, or relating to a sesquicentenary.
plural sesquicentennials
- A 150th anniversary.
The city celebrated its sesquicentennial last year.
1 more example
Sesquicentennial, I know I’ll see myself here again / And I guess only time will tell, will it ever be like it was then / Sesquicentennial, oh here we go again
2026, “Sesquicentennial”, performed by Sofie Royer
Origin
From sesqui- (“one-and-a-half”) + centennial (“of 100 years”). By surface analysis, sesqui- + cent- + -ennial.
Full word history & related roots →Translations
French sesquicentenaire
- sesquicentenairea 150th anniversary
German hundertfünfzigjährig, Hundertfünfzigjahrfeier
- hundertfünfzigjährigof, or relating to a sesquicentenary
- Hundertfünfzigjahrfeiera 150th anniversary
- hundertfünfzigjähriges Jubiläuma 150th anniversary
Greek εκατοπεντηκονταετηρίδα
- εκατοπεντηκονταετηρίδα (ekatopentikontaetirída)a 150th anniversary
Portuguese sesquicentenário, sesquicentenário
- sesquicentenáriooccurring every 150 years
- sesquicentenárioa 150th anniversary
Russian происходящий каждые полтора́ века, полуторавековой
- происходящий каждые полтора́ века (proisxodjaščij každyje poltorá veka)occurring every 150 years
- полуторавековой (polutoravekovoj)of, or relating to a sesquicentenary
- полуторавековой юбиле́й (polutoravekovoj jubiléj)a 150th anniversary
Spanish sesquicentenario
- sesquicentenariooccurring every 150 years
Cite this entry
sesquicentennial. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sesquicentennial
“sesquicentennial.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sesquicentennial. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “sesquicentennial,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sesquicentennial.
Source: sesquicentennial on Wiktionary, CC BY-SA 4.0.