stereoptican (n.)youdaoicibaDictYouDict[stereoptican 词源字典]
"double magic lantern producing dissolving views or impressions of three-dimensionality to pictured objects," 1858, from stereo- + Greek optikon, neuter of optikos "pertaining to sight" (see optic).[stereoptican etymology, stereoptican origin, 英语词源]
stereognosisyoudaoicibaDictYouDict
"The mental perception of depth or three-dimensionality by the senses, usually in reference to the ability to perceive the form of solid objects by touch", Early 20th century: from Greek stereos 'solid' + gnōsis 'knowledge'.