Definitions
1.AdjectiveComprising two syllables.
2.NounSynonym of disyllabic.
3.Noun↑ The Corpus of Contemporary American English: disyllabic (34) vs. bisyllabic (2): Disyllabic is seventeen times more common than bisyllabic in this corpus.
4.Noun↑ The British National Corpus (BYU–BNC): disyllabic (18) vs. bisyllabic (1): Disyllabic is eighteen times more common than bisyllabic in this corpus.
5.Noun↑ The Time Magazine Corpus of American English: disyllabic (0), dissyllabic (1) vs. bisyllabic (1): Bisyllabic and dissyllabic (a superseded spelling of disyllabic) occur equally often in this corpus.
6.Noun↑ The Oxford English Dictionary (BYU–OED): disyllabic (7), dissyllabic (6) vs. bisyllabic (1): Disyllabic and dissyllabic, taken together, are thirteen times more common than bisyllabic in the entire text of this dictionary.