triennial

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[edit] English

[edit] Adjective

triennial (not comparable)

Positive
triennial

Comparative
not comparable

Superlative
none (absolute)

  1. Happening every three years.
  2. Lasting for three years.

[edit] Noun

Singular
triennial

Plural
triennials

triennial (plural triennials)

  1. A third anniversary.