Alexandrine

An alexandrine is a line of poetic meter comprising 12 syllables. Alexandrines are common in the German literature of the Baroque period and in French poetry of the early modern and modern periods. Drama in English often used alexandrines before Marlowe and Shakespeare, by whom it was supplanted by iambic pentameter (5-foot verse). In non-Anglo-Saxon or French contexts, the term dodecasyllable is often used.

Read more about Alexandrine:  Syllabic Verse, Modern References, Accentual-syllabic Verse, Origin