dodecasyllabic

[ doh-dek-uh-si-lab-ik, doh-dek- ]
/ doʊˌdɛk ə sɪˈlæb ɪk, ˌdoʊ dɛk- /

adjective

consisting of or pertaining to 12 syllables.

noun

a dodecasyllable.

Origin of dodecasyllabic

First recorded in 1880–85; dodeca- + syllabic