quindecennial

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adjective

Lasting fifteen years.

OriginLatin quindecennialis →
Scrabble 25
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Meanings

adjectivequindecennial (not comparable)
  1. not comparableLasting fifteen years.
  2. not comparableHappening once in fifteen years.

Origin

  1. Latinquindecennialis
  2. Englishquindecennial

From Latin quindecennialis, from quindecennium (“15-year period”) + -alis (“-al: forming adjs”). Equivalent to quindec- + -ennial.

More words from Latin

Full word history & related roots →

Translations

French quindécennal
  • quindécennalTranslations
Cite this entry
APA

quindecennial. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/quindecennial

MLA

“quindecennial.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/quindecennial. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “quindecennial,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/quindecennial.

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