Duodecennial

//ˌduːoʊdɪˈsɛnɪəl// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Consisting of twelve years, occurring in 12-year cycles. not-comparable

    "The duodecennial Chinese zodiac originated from Chinese and Indian observations of the duodecennial cycle of the Jovian orbit."

  2. 2
    Occurring once a duodecade, occurring every 12 years. not-comparable

    "The concept of a duodecennial "Jupiter return" in Western astrology arose from similar concerns."

Example

More examples

"The duodecennial Chinese zodiac originated from Chinese and Indian observations of the duodecennial cycle of the Jovian orbit."

Etymology

From Latin duodecennium (“12-year period”) + English -al (“forming adjs”), equivalent to borrowing the unattested duodecennialis.

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