duodecennial.
Consisting of twelve years, occurring in 12-year cycles.
Meaning & usage
Consisting of twelve years, occurring in 12-year cycles.
The duodecennial Chinese zodiac originated from Chinese and Indian observations of the duodecennial cycle of the Jovian orbit.
Occurring once a duodecade, occurring every 12 years.
The concept of a duodecennial "Jupiter return" in Western astrology arose from similar concerns.
Where this word comes from
From Latin duodecennium (“12-year period”) + English -al (“forming adjs”), equivalent to borrowing the unattested duodecennialis.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.