noun
: a picture of a subject which the viewer may see as either of two different subjects or as the same subject from either of two different viewpoints depending on his interpretation of the total configuration
noun
: a picture of a subject which the viewer may see as either of two different subjects or as the same subject from either of two different viewpoints depending on his interpretation of the total configuration
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012