Found 2 items, similar to digraph.
English → English (WordNet)
Definition: digraph
digraph
n : two successive letters (especially two letters used to
represent a single sound: `sh' in `shoe')
English → English (gcide)
Definition: Digraph
Digraph
\Di"graph\, n. [Gr. di- = di`s- twice + ? a writing, ?
to write.]
Two signs or characters combined to express a single
articulated sound; as ea in head, or th in bath.
[1913 Webster]