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dodecastyle

American  
[doh-dek-uh-stahyl] / doʊˈdɛk əˌstaɪl /
Also dodecastylar,

adjective

Architecture.
  1. having 12 columns.

  2. (of a classical temple or building in the style of one) having 12 columns on one or either front.


Etymology

Origin of dodecastyle

1815–25; < Greek dōdekástȳlos; dodeca-, -style 2