WordReference Random House Unabridged Dictionary of American English © 2026
sep•ti•syl•la•ble
(sep′tə sil′ə bəl),USA pronunciation n.
sep•ti•syl•lab•ic
(sep′tə si lab′ik),USA pronunciation adj.
- Linguisticsa word made up of seven syllables.
- 1825–35; septi- + syllable