IPA: /dɪˈsaɪfərmənt/
KK: /dɪˈsaɪfərmənt/
The process of figuring out or understanding something that is difficult to read or understand, especially when it involves translating or interpreting old or unknown languages.
The decipherment of the ancient script took many years of study and research.
Decipherment is formed from "de-" (meaning down from or away) and "cipher" (from Old French *cifre*, meaning a code or a figure). The suffix "-ment" (meaning the action or result of) indicates the process of decoding or interpreting a code. Thus, decipherment refers to the action of interpreting or making sense of a coded message.
Think of 'decoding' something 'away' from its original 'code' — that's what decipherment means.