cryptology

crypto- +‎ -logy, from Ancient Greek κρυπτός (kruptós, “hidden”) + λόγος (lógos, “word”).

• (UK) IPA^(key): /kɹɪpˈtɒl.ə.dʒi/
• (US) IPA^(key): /kɹɪpˈtɑ.lə.dʒi/

cryptology (usually uncountable, plural cryptologies)

1. The science or study of mathematical, linguistic, and other coding patterns and histories.
2. The practice of analysing encoded messages, in order to decode them.
3. Secret or enigmatical language.

   (Can we find and add a quotation of Johnson to this entry?)

An umbrella term for cryptography and cryptanalysis.

• cryptography, cryptanalysis, ciphertext, plaintext, cleartext, code, key
• Appendix:Glossary of cryptography