Definition of decasyllabic in English:

decasyllabic

adjective

Prosody
  • (of a metrical line) consisting of ten syllables.

    • ‘During his brief but turbulent life, he wrote some thirty lyric poems, as well as several in the decasyllabic tradition.’
    • ‘More precisely, you adapt a variation of decasyllabic meter, where your lines alternate between thirteen and seven syllables each.’
    • ‘John Gurney said that what he liked about the decasyllabic line was that it could be made close to conversation but was yet ` something better than prose’.’
    • ‘Unlike Southwell's four other nativity poems, this one is written in decasyllabic six-ains, which we find frequently in his poetry.’
    • ‘They should be ruled rather by accent than by mere beat, but in no case may there be a line or lines which cannot be read as decasyllabic without difficulty or hesitation.’

noun

Prosody
  • A metrical line of ten syllables.

Pronunciation:

decasyllabic

/ˌdekəsiˈlabik/