Duodecim
/ˌduː.əˈdɛs.ɪm/noun
Latin for “twelve,” used in historical and scholarly contexts.
Did you know?Latin duodecim is one of the clearest examples of a composite number-name surviving into countless modern words, from duodecimal systems to duodecimo book formats.
Etymological Timeline
Proto-Indo-European
PIE
*dwóh₁
“two”
Proto-Indo-European
PIE
*déḱm̥
“ten”
Latin
Latin
duodecim
“twelve”
Late Latin
Latin
duodecimus
“twelfth”
Modern English
English
duodecimal
“based on twelve; using twelve as the base of a numeral system”
Explore more surprising origins