Stereoscope (noun)

An optical instrument that is used to view a pair of two-dimensional images, such as photographs, as a single three-dimensional image.

Origin:

A stereoscope is an optical instrument that is used to view a pair of two-dimensional images, such as photographs, as a single three-dimensional image. the word "stereoscope" comes from the greek words "stereos" meaning solid and "skopein" meaning to look at.

Examples:

1. I saw a 3D image of the Eiffel tower through the stereoscope.
2. The stereoscope was a popular device in the late 19th century for viewing stereo photographs.
3. The stereoscope can be used to view any pair of stereoscopic images.
4. I remembered my childhood days when I used to see the world in 3D through the stereoscope.
5. The stereoscope was a key component in the development of 3D photography.