duodecimal
Pronunciation: /ˌdjuːə(ʊ)ˈdɛsɪm(ə)l/
Definition of duodecimal
adjective
noun
Origin:
late 17th century: from Latin duodecimus 'twelfth' (from duodecim 'twelve') + -al
late 17th century: from Latin duodecimus 'twelfth' (from duodecim 'twelve') + -al