Word.ws English Dictionary

sesquidecennial

sesquidecennial adjective: relating to a fifteen year period.

Adjective

sesquidecennial (not comparable)

  1. Relating to a fifteen year period

Origin of sesquidecennial

From sesqui- + decennial.

Questions about sesquidecennial

What does sesquidecennial mean?
Sesquidecennial means relating to a fifteen year period.
What part of speech is sesquidecennial?
Sesquidecennial is an adjective.

Words near sesquidecennial in the dictionary

  1. sesquicentennially
  2. sesquicentennials
  3. sesquicentury
  4. sesquichloride
  5. sesquichlorides
  6. sesquidecennial
  7. sesquidiurnal
  8. sesquiduple
  9. sesquiduplicate
  10. sesquiennial
  11. sesquifumarate

Source and license

Adapted from Wiktionary: sesquidecennial (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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