hendecasyllable Syllabification: (hen·dec·a·syl·la·ble)Pronunciation: /henˈdekəˌsiləbəl, -ˌdekəˈsiləbəl/Definition of hendecasyllable noun Prosody a line of verse containing eleven syllables. Derivatives hendecasyllabicPronunciation: /henˌdekəsəˈlabik/ adjective hendecasyllable in other Oxford dictionaries Definition of hendecasyllable in the British & World English dictionary