steganography

From Ancient Greek στεγανός (steganós, “cover, roof”) +‎ -graphy.

• (UK) IPA^(key): /ˌstɛɡ.ənˈɒɡ.ɹə.fi/
• (US) IPA^(key): /ˌstɛ.ɡəˈnɔ.ɡɹə.fi/

• Audio (US):

  (file)

steganography (uncountable)

1. The art and science of concealing a secret message, data, or file within another innocuous message, image, audio file, or physical object in a way that hides the very existence of the hidden information from casual observation.
2. (computing, cryptography) The use of small computer files to communicate secret information.

• Steganography differs from cryptography in that cryptography conceals only the content of the message through encryption, while steganography conceals the presence of the message itself.