Octennium

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An eight-year period. rare

Synonyms

All synonyms
octaeterisoctaeterisoctennial

Etymology

From Late Latin octennium, from octennis (“8-year”) + -ium (suffix forming abstract nouns).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.