octosyllabic

The octosyllable or octosyllabic verse is a line of verse with eight syllables. It is equivalent to tetrameter verse in iambs or trochees in languages with a stress accent. Its first occurrence is in a 10th-century Old French saint's legend, the Vie de Saint Leger; another early use is in the early 12th-century Anglo-Norman Voyage de saint Brendan. It is often used in French, Italian, Spanish and Portuguese poetry. While commonly used in couplets, typical stanzas using octosyllables are: décima, some quatrains, redondilla.