polygraphiccode
nounUK /ˌpɒlɪˈɡræfɪk kəʊd/
US /ˌpɑːlɪˈɡræfɪk koʊd/
A polygraphic code is a secret code that turns groups of letters into other letters so people can hide a message.
The spies used a polygraphic code to keep their plans secret.
RELATED WORDS
OTHER MEANINGS
2. A code in which each unit of plaintext is replaced by a group of symbols rather than a single symbol.
The polygraphic code replaced every pair of letters with one new symbol.
3. A system of writing that uses many different signs or symbols to stand for sounds or ideas.
Ancient scribes developed a polygraphic code with hundreds of signs.
4. A method of encoding data where blocks of characters are transformed together.
The program applied a polygraphic code to scramble the file in blocks.