decasyllabic

1. not comparableHaving 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.

   1969, Maya Angelou, chapter 23, in I Know Why the Caged Bird Sings, New York: Bantam, published 1971, page 152

   1 more example

   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).

   1992, Peter Quartermain, “‘Not at All Surprised by Science’: Louis Zukofsky’s First Half of ‘A’ – 9”, in Disjunctive Poetics: From Gertrude Stein and Louis Zukofsky to Susan Howe (Cambridge Studies in American Literature and Culture), Cambridge, Cambridgeshire: Cambridge University Press, →ISBN, page 74

2. not comparableComposed of decasyllables.

plural decasyllabics

1. pluralA decasyllable.

   an English sonnet written in decasyllabics