Hiding a secret message within a larger one in such a way that others can not discern the presence or contents of the hidden message. For example, a message might be hidden within an image by changing the least significant bits to be the message bits.
[Chaffing and Winnowing: Confidentiality without Encryption, Ronald L. Rivest, MIT Lab for Computer Science, 1998-03-22 (http://theory.lcs.mit.edu/~rivest/chaffing.txt)].
noun 1. Wallace (Earle) 1909–93, U.S. novelist and short-story writer.
stegnosis steg·no·sis (stěg-nō’sĭs) n. A stoppage of a secretion. A constriction or stenosis.
stegnotic steg·not·ic (stěg-nŏt’ĭk) adj. Astringent or constipating. n. An agent that is astringent or constipating.
1. a combining form meaning “cover,” used in the formation of compound words: stegosaur. verb to hide information by embedding it inside ordinary text or images Word Origin Greek steganos ‘covered’ Usage Note computing