Definition of biliteral
1 : consisting of or employing two letters or types of letters: such as a : having two root consonants Semitic biliteral nouns b : written in two different alphabets
2 cryptography a : composed of or employing a cover text in which two letter forms or typefaces are used in significant combinations — see bacon biliteral cipher b : representing one letter by two
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Origin and Etymology of biliteral
1bi- + literal
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