duodecennial

D2U1O1D2E1C3E1N1N1I1A1L1
US/ˌduːoʊdɪˈsɛnɪəl/UK/ˌdjuːəʊdɪˈsɛnɪəl/

adjective

Consisting of twelve years, occurring in 12-year cycles.

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

OriginLatin duodecennium →
Scrabble 16
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectiveduodecennial (not comparable)
  1. not comparableConsisting 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.

  2. not comparableOccurring once a duodecade, occurring every 12 years.

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

Origin

  1. Latinduodecennium“12-year period”
  2. Englishduodecennial

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

More words from Latin

Full word history & related roots →

Translations

Latin duodecennialis
  • duodecennialisTranslations
Cite this entry
APA

duodecennial. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/duodecennial

MLA

“duodecennial.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/duodecennial. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “duodecennial,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/duodecennial.

Source: duodecennial on Wiktionary, CC BY-SA 4.0.