(from the article `eye, human`) A stereogram contains two drawings of a three-dimensional object taken from different angles, chosen such that the pictures are right- and left-eyed ... Found on http://www.britannica.com/eb/a-z/s/160
Ste're·o·gram noun [ Stereo- + -gram .] A diagram or picture which represents objects in such a way as to give the impression of relief or solidity; also, a stereograph. Found on http://www.encyclo.co.uk/webster/S/194