[ ˌdju:ə(ʊ)'dɛsɪm(ə)l ]
■ adjective relating to or denoting a system of counting or numerical notation that has twelve as a base.
Derivatives
~ly adverb
Origin
C17: from L. duodecimus 'twelfth' + -al .
DUODECIMAL
Meaning of DUODECIMAL in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004