a. [f. BI- pref.2 1 + LITERAL, f. L. lītera or littera letter.] Having or consisting of two letters; quasi-sb. a linguistic root consisting of two letters. Biliteralism, a biliteral condition of language.

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1787.  Sir W. Jones, Anniv. Disc., iv. (1824), I. 43. It is the genius of the Sanscrit … that the roots of verbs be almost universally biliteral.

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1863.  R. Townsend, Mod. Geom., I. 2. The former or biliteral notation is … more convenient.

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1874.  Sayce, Compar. Philol., ii. 78. The so-called biliterals are … the result of phonetic decay.

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1860.  Farrar, Orig. Lang., x. 212. The supposition of an original biliteralism.

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