dodeca-

American

especially before a vowel, dodec-.

a combining form meaning “twelve,” used in the formation of compound words.

dodecasyllabic.

dodeca- British

combining form

indicating twelve

dodecagon
dodecahedron
dodecaphonic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of dodeca-

< Greek dōdeka-, combining form of dōdekás twelve, equivalent to dō- two + -dekas ten

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023