decasyllabic

adj

1. (not-comparable)Having ten syllables.

   “The accomplishment was nothing. The meticulous maps, drawn in three colors of ink, learning and spelling decasyllabic words, memorizing the whole of The Rape of Lucrece—it was for nothing.”

   “The lines are almost uniformly decasyllabic (though the syntax breaks up the iambs early in the sequence), and there are some notable exceptions which mainly cluster toward the end of the final sonnet (one line is a thirteener).”

2. (not-comparable)Composed of decasyllables.

noun

1. (plural)A decasyllable.

   “an English sonnet written in decasyllabics”