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duodecimal

du·o·de·cim·al/ˌd(j)uː.əʊˈdɛs.ɪm.əl/adjective, noun

duodecimal is spelled D-U-O-D-E-C-I-M-A-L: 10 letters and 5 syllables (du·o·de·cim·al). It appears about once in every 50 million words in written English, the 220,118th most frequent word form (wordfreq, 2021 data). As an adjective, duodecimal means “Of a number, expressed in base twelve” (English Wiktionary, September 2026).

How many letters and syllables are in duodecimal?

Letters10: D-U-O-D-E-C-I-M-A-L
Syllables5: du·o·de·cim·al
In writingabout once in every 50 million words; the 220,118th most frequent word form
Wrong spellings searchednone measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is duodecimal?

Duodecimal appears about once in every 50 million words in written English, the 220,118th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce duodecimal?

  • /ˌd(j)uː.əʊˈdɛs.ɪm.əl/

Duodecimal has 5 syllables, split du·o·de·cim·al in writing.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-duodecimal.wav, Wikimedia Commons (author and licence on each file's page).

Forms of duodecimal

  • duodecimals plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does duodecimal mean?

The meanings the English Wiktionary records, quoted as written there (source below).

adjective

  1. 1

    Of a number, expressed in base twelve.

    6B4 is the duodecimal notation for the decimal number 1000.

noun

  1. 1

    A number system that uses twelve as its base.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Duodecimal in Spanish, French, German and Portuguese

LanguageWords
Frenchduodécimal (expressed in a base-twelve number system)
Portugueseduodecimal (expressed in a base-twelve number system)
Spanishduodecimal (expressed in a base-twelve number system)
GermanDuodezimalsystem (base-twelve number system)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does duodecimal come from?

From duo- + decimal.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after duodecimal