decipherment

About 0.18 uses per million words.

Meaning

1. noun The analysis of documents written in ancient languages, where the language is unknown, or knowledge of the language has been lost.
2. noun Decryption.

Similar words

decoding decryption cryptology cryptanalysis diplomatic epigraphy cryptoanalysis diplomatics glossography cryptolinguistics

Often followed by

of and is was in by has to that