Biliteral
Pronunciation : Bi*lit"er*al
Part of Speech : a.
Etymology : [L. bis twice + littera letter.]
Definition : Defn: Consisting of two letters; as, a biliteral root of a Sanskrit verb. Sir W. Jones. -- n.
Defn: A word, syllable, or root, consisting of two letters.
Source : Webster's Unabridged Dictionary, 1913