Definify.com

Webster 1913 Edition

Noun.

[Gr.

δι-

δίσ-

twice + [GREEK] a writing, [GREEK] to write.]

Two signs or characters combined to express a single articulated sound; as

in head, or

in bath.

Noun.

[Gr., to write.] A union of two vowels, of which one only is pronounced, as in head, breath.