Standard Lemma guide

sesquicentennial

adj · noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˌsɛskwɪsɛnˈtɛni.əl/
  • US: Recorded audio is listed in the source snapshot.

1

adj

Meaning 1

Occurring every 150 years.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Of, or relating to a sesquicentenary.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A 150th anniversary.

Definition source: English Wiktionary via Wiktextract

Examples

  • The city celebrated its sesquicentennial last year.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

the 150th anniversary (or the celebration of it)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: anniversary, day of remembrance

History

Etymology

From sesqui- (“one-and-a-half”) + centennial (“of 100 years”). By surface analysis, sesqui- + cent- + -ennial.

Across languages

Translations

11 source translations are retained for this English entry.

  • Portuguese: sesquicentenário — occurring every 150 years
  • Russian: происходящий каждые полтора́ века (proisxodjaščij každyje poltorá veka) — occurring every 150 years
  • Spanish: sesquicentenario — occurring every 150 years
  • German: hundertfünfzigjährig — of, or relating to a sesquicentenary
  • Russian: полуторавековой (polutoravekovoj) — of, or relating to a sesquicentenary
  • French: sesquicentenaire — a 150th anniversary
  • German: Hundertfünfzigjahrfeier — a 150th anniversary
  • German: hundertfünfzigjähriges Jubiläum — a 150th anniversary
  • Greek: εκατοπεντηκονταετηρίδα (ekatopentikontaetirída) — a 150th anniversary
  • Portuguese: sesquicentenário — a 150th anniversary
  • Russian: полуторавековой юбиле́й (polutoravekovoj jubiléj) — a 150th anniversary
Real reading context

sesquicentennial in complete knowledge articles