Word.ws English Dictionary

quindecennial

quindecennial adjective: lasting fifteen years.

Adjective

quindecennial (not comparable)

  1. Lasting fifteen years.
  2. Happening once in fifteen years.

Origin of quindecennial

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

Questions about quindecennial

What does quindecennial mean?
Quindecennial means lasting fifteen years.
What part of speech is quindecennial?
Quindecennial is an adjective.

Words near quindecennial in the dictionary

  1. quindecemvirate
  2. quindecemviri
  3. quindecemvirs
  4. quindecennalia
  5. quindecennalias
  6. quindecennial
  7. quindecile
  8. quindeciles
  9. quindecillion
  10. quindecillions
  11. quindecillionths

Source and license

Adapted from Wiktionary: quindecennial (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: “quindecennial.” Word.ws, https://word.ws/quindecennial. Based on Wiktionary, CC BY-SA 4.0.