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duodecimal Line breaks: duo|deci¦mal
Pronunciation: /ˌdjuːə(ʊ)ˈdɛsɪm(ə)l/

Definition of duodecimal in English:


Relating to or denoting a system of counting or numerical notation that has twelve as a base.
Example sentences
  • In a duodecimal system (base twelve) why are letters sometimes used instead of numbers?
  • The duodecimal calendar has survived since Babylonian times for a reason.
  • The regime didn't like the 12-base, or duodecimal, calendar (inherited from antiquity and early Christianity), so it tried to impose a decimal calendar.


[mass noun] Back to top  
The system of duodecimal notation.
Example sentences
  • Base 11 is called undenary, Base 12 is called duodenary or duodecimal, Base 16 is called hexadecimal.


Example sentences
  • Most common timings could be handled duodecimally with no need for time signatures.
  • His plan would teach people to count duodecimally with two new digits: eight nine deck ell ten; and this by itself would recommend it, as duodecimal arithmetic is a coming reform.
  • The figures, however, are obviously artificial, for they are usually round sums and, like the geld, frequently duodecimally based.


Late 17th century: from Latin duodecimus 'twelfth' (from duodecim 'twelve') + -al.

Definition of duodecimal in:
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