What does decipherment mean?
Decipherment is the noun denoting the process — and often the achievement — of turning writing that cannot be read into writing that can. It covers two closely related activities: breaking codes and ciphers so that secret messages become intelligible, and interpreting ancient or unknown writing systems so that long-silent texts speak again. Famous examples include Champollion's decipherment of Egyptian hieroglyphs using the Rosetta Stone and Ventris's decipherment of the Bronze Age Greek script Linear B. The word carries connotations of intellectual breakthrough, patience, and puzzle-solving, and it typically appears in formal, academic, or technical contexts rather than everyday conversation. Because it names both an activity ('the decipherment of the manuscript took decades') and a result ('a complete decipherment was finally published'), it is a precise and valuable term in discussions of cryptography, archaeology, and the history of writing.
nounThe act, process, or result of decoding something written in a cipher or in an unknown script; the successful interpretation of previously unreadable text.
- The process or act of converting text written in cipher or code into plain language (decryption).
- The scholarly interpretation of an ancient or otherwise unknown writing system, making its texts readable for the first time.
"The decipherment of Linear B by Michael Ventris revealed that the script recorded an early form of Greek."
"Allied cryptanalysts achieved the decipherment of the Enigma-encrypted messages during the Second World War."
"Champollion's decipherment of the Rosetta Stone hieroglyphs opened up three thousand years of Egyptian written history."
Rarely used in the plural; 'decipherment' usually appears as an uncountable noun. The plural is appropriate only when referring to distinct individual acts or results of deciphering.
"The volume collects the major decipherments of ancient scripts achieved during the twentieth century."
When Michael Ventris cracked Linear B in the 1950s, he proved that 'unreadable' Greek tablets from 3,000 years ago were mostly palace inventory lists — and decipherment turned mystery into receipts.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of decipherment
Decipherment derives from the verb decipher, formed in the late sixteenth century from the prefix de- (indicating reversal) plus cipher, a word borrowed via Old French cifre from Medieval Latin cifra, ultimately from Arabic ṣifr meaning 'zero' or 'empty'. The suffix -ment converts the verb into a noun denoting the action or result of the process. The Arabic root also gave English the words zero and cipher itself, making them distant relatives within the same word family.
How decipherment is actually used
Decipherment is a formal, largely academic and technical term. It is standard in linguistics and archaeology when discussing scripts such as hieroglyphics, cuneiform, or Linear B, and in cryptography when discussing breaking codes. The countable plural 'decipherments' is rare but acceptable when referring to individual instances or results.
Easily confused with decipherment
Encryption is the process of converting readable text into code to conceal it, whereas decipherment is the process of working such coded or unknown writing back into readable form.