steganography
/ˌstɛɡ.ənˈɒɡ.ɹə.fi/
stɛɡ · ƏNⱰꞬ · ɹə · fi (4 syllables)
English
Noun
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Definition
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.
Etymology
From Ancient Greek στεγανός (steganós, “cover, roof”) + -graphy.
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