polybius square

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|telecommunications|historical}} A character code represented by two sets of six lit torches, used to send messages character by character, in a two point visual fire telegraph. The character code is generated by encoding characters in a grid, where each character generates two numbers, uniquely representing each character as a pair of numbers.
2. {{lb|en|cryptography}} A [[grid]] used for [[fractionate|fractionating]] [[plaintext]] [[character]]s so that they can be represented by a smaller set of [[symbol]]s.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.