🔐 Encrypting letter groups 🖨️ Multiple writing systems

polygraphic

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Relating to codes that use groups of letters as single units to hide messages

adjective
/ˌpɒlɪˈɡræfɪk/

Specialized

: poligráfico

In cryptography, polygraphic systems use pairs or groups of letters for encryption.

Examples

The textbook included a chapter on polygraphic substitution methods used in historical ciphers.
The security expert explained how a polygraphic cipher increases the complexity of codebreaking.
Wow! That polygraphic method is impressive!
The polygraphic system was revolutionary in data security.
In cryptography, polygraphic systems use pairs or groups of letters for encryption.
The security expert explained how a polygraphic cipher increases the complexity of codebreaking.
The textbook included a chapter on polygraphic substitution methods used in historical ciphers.

Surface Forms

polygraphic positive

Morphology

polygraphic = graphic (opaque) = poly + graph + ic

Although the word is built from poly- + graphic, its cryptographic meaning is a specialized technical sense that is not straightforwardly recoverable for most learners.

Etymology

Polygraphic comes from Greek parts poly- 'many' and graph 'to write', the same poly- as in polyglot and graph as in autograph. In codes, it means a method that 'writes' or changes many letters at once, so the name shows the system treats groups of letters as one block.