consisting of or pertaining to eight syllables.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use octosyllabic in a sentence
He revived the measure known as dcimas or espinelas, consisting of a stanza of ten octosyllabic lines.
He soon takes up the simple octosyllabic couplet, treated, however, with great freedom.The Flourishing of Romance and the Rise of Allegory | George Saintsbury
Most of the jongleurs who wrote these merry and indecent tales in octosyllabic verse were persons of less distinction.
The change is marked by a return to blank verse: the previous lines are mostly in octosyllabic couplets.Milton's Comus | John Milton
Dcimas are strophes of ten octosyllabic verses with the rhyme-scheme a b b a a c c d d c.Legends, Tales and Poems | Gustavo Adolfo Becquer