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Webster 1913 Edition

(dĭsˊsĭl-lăb′ĭk)

Adj.

[Cf. F.

dissyllabique

. See

Consisting of two syllables only;

as, a

dissyllabic

foot in poetry

B. Jonson.

Adj.

Consisting of two syllables only; as a dissyllabic foot in poetry.

dissyllabic ‎(not comparable)

Archaic form of disyllabic.
(Can we find and add a quotation of Ben Jonson to this entry?)