septendecennial

English

Etymology

From Latin septendec(im) (“seventeen”) +‎ -ennial, after biennial, septennial, etc.[1] By surface analysis, septen- +‎ decennial.

Pronunciation

  • IPA(key): /ˌsɛptəndɛˈsɛn.i.əl/
  • Rhymes: -ɛn.i.əl

Adjective

septendecennial (not comparable)

  1. (rare) Occurring every seventeen years; pertaining to or designating a seventeen-year interval.
    • 2025, Henry Feinberg, Entomological Patterns and Lexical Precision:
      The septendecennial emergence of Magicicada septendecim represents one of the most remarkable synchronized reproductive cycles in the animal kingdom, with entire broods surfacing after precisely seventeen years underground.

Synonyms

  • heptadecennial (less common)

Derived terms

  • septendecenniality

See also

References

  1. ^ “septendecennial, adj.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.
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