Definition of disyllable in US English:

disyllable

(also dissyllable)

noun

Prosody
  • A word or metrical foot consisting of two syllables.

    • ‘A disyllable or disyllabic word has two syllables, a trisyllable or trisyllabic word has three.’
    • ‘Note that this is exponentially worse than the Manning Henkel problem, since there are not two but four dissyllables to conjure with.’
    • ‘The call, sometimes preceded by a single note, was a repeated series of disyllables, the second syllable stressed.’
    • ‘The second, with its mixture of monosyllables and disyllables - listen, walking, chamber - sustains the alliterative flourish of Melting melodious words.’

Origin

Late 16th century: alteration (influenced by syllable) of French disyllabe, via Latin from Greek disullabos ‘of two syllables’, from di- ‘two’ + sullabē ‘syllable’.

Pronunciation

disyllable

/dīˈsiləb(ə)l//daɪˈsɪləb(ə)l/