WordReference Random House Unabridged Dictionary of American English © 2025
dodeca-, 
  1. a combining form meaning "twelve,'' used in the formation of compound words:dodecasyllabic.
Also,[esp. before a vowel,] dodec-. 
  • Greek dōdeka-, combining form of dōdekás twelve, equivalent. to dō- two + -dekas ten

Collins Concise English Dictionary © HarperCollins Publishers::
dodeca-
  1. indicating twelve: dodecagon, dodecahedron, dodecaphonic
Etymology: from Greek dōdeka twelve
'dodeca-' also found in these entries (note: many are not synonyms or translations):
dodecagon - dodecahedron - dodecaphonism - dodecastyle - dodecasyllabic - dodecasyllable

Forum discussions with the word(s) "dodeca-" in the title:


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